mirror of
https://github.com/wassname/scikit-image.git
synced 2026-07-23 13:10:18 +08:00
534 lines
21 KiB
Python
534 lines
21 KiB
Python
from util import prepare_for_display, window_manager, GuiLockError, ColorMixer
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import numpy as np
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import sys
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try:
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# We try to aquire the gui lock first or else the gui import might
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# trample another GUI's PyOS_InputHook.
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window_manager.acquire('qt')
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except GuiLockError, gle:
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print gle
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else:
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try:
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from PyQt4.QtGui import (QApplication, QMainWindow, QImage, QPixmap,
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QLabel, QWidget, QVBoxLayout, QSlider)
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from PyQt4 import QtCore, QtGui
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except ImportError:
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print 'PyQT4 libraries not installed. Plugin not loaded.'
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window_manager._release('qt')
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else:
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app = None
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class LabelImage(QLabel):
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def __init__(self, parent, arr):
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QLabel.__init__(self)
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self.parent = parent
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# we need to hold a reference to
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# arr because QImage doesn't copy the data
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# and the buffer must be alive as long
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# as the image is alive.
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self.arr = arr
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# we also need to pass in the row-stride to
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# the constructor, because we can't guarantee
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# that every row of the numpy data is
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# 4-byte aligned. Which Qt would require
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# if we didnt pass the stride.
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self.img = QImage(arr.data, arr.shape[1], arr.shape[0],
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arr.strides[0], QImage.Format_RGB888)
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self.pm = QPixmap.fromImage(self.img)
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self.setPixmap(self.pm)
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def mouseMoveEvent(self, evt):
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self.parent.label_mouseMoveEvent(evt)
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class ImageWindow(QMainWindow):
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def __init__(self, arr, mgr):
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QMainWindow.__init__(self)
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self.mgr = mgr
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self.main_widget = QWidget()
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self.layout = QtGui.QGridLayout(self.main_widget)
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self.setCentralWidget(self.main_widget)
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self.label = LabelImage(self, arr)
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self.layout.addWidget(self.label, 0, 0)
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self.mgr.add_window(self)
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self.main_widget.show()
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def closeEvent(self, event):
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# Allow window to be destroyed by removing any
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# references to it
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self.mgr.remove_window(self)
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def label_mouseMoveEvent(self, evt):
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pass
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class IntelligentSlider(QSlider):
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''' A slider that adds a 'name' attribute and calls a callback
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with 'name' as an argument to the registerd callback.
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This allows you to create large groups of sliders in a loop,
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but still keep track of the individual events'''
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def __init__(self, name, callback, conv_fac):
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QSlider.__init__(self)
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self.name = name
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self.callback = callback
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self.conv_fac = conv_fac
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self.name_label = QLabel()
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self.name_label.setText(self.name)
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self.name_label.setAlignment(QtCore.Qt.AlignCenter)
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self.value_label = QLabel()
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self.value_label.setText('')
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self.value_label.setAlignment(QtCore.Qt.AlignCenter)
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# bind this to the valueChanged signal of the slider
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def i_changed(self, val):
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val = self.conv_val()
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self.value_label.setText(str(val)[:4])
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self.callback(self.name, val)
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def conv_val(self):
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return self.value() * self.conv_fac
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class NSliderBlock(QWidget):
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'''Creates a block of n sliders with ranges
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specified as a list of tuples. The fourth entry
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in the tuple will be used as a dictionary key
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so you can access the slider later.
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So the tuple should be (min, max, initial, name)
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The callback is the function to be called
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when a slider value changes. The callback will be
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called with the following arguments (name, value).
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You can get a hook to a specific slider using
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NSliderBlock.sliders[name]
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'''
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def __init__(self, n, ranges_labels, callback):
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QWidget.__init__(self)
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if len(ranges_labels) != n:
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raise ValueError('not enough or too many ranges supplied')
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self.callback = callback
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# each key will give you
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self.sliders = {}
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self.layout = QtGui.QGridLayout(self)
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for i in range(n):
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params = ranges_labels[i]
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if len(params) != 5:
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raise ValueError('Tuples must be length 4')
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name = params[3]
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conv_fac = params[4]
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slider = IntelligentSlider(name, self.callback, conv_fac)
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slider.setMinimum(params[0])
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slider.setMaximum(params[1])
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slider.setValue(params[2])
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slider.valueChanged.connect(slider.i_changed)
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self.sliders[name] = slider
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self.layout.addWidget(slider.name_label, 0, i)
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self.layout.addWidget(slider, 1, i, QtCore.Qt.AlignHCenter)
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self.layout.addWidget(slider.value_label, 2, i)
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self.layout.setColumnMinimumWidth(i, 50)
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def set_sliders(self, vals):
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# vals should a dict to of slider names and set vals
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if len(vals) != len(self.sliders):
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raise ValueError('Wrong number of values')
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for key, value in vals.iteritems():
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self.sliders[key].setValue(value)
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class MixerPanel(QWidget):
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'''A color mixer to hook up to an image.
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You pass the image you the panel to operate on
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and it operates on that image in place. You also
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pass a callback to be called to trigger a refresh.
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This callback is called every time the mixer modifies
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your image.'''
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def __init__(self, img, callback):
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QWidget.__init__(self)
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self.img = img
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self.update = callback
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self.mixer = ColorMixer(self.img)
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#---------------------------------------------------------------
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# ComboBox
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#---------------------------------------------------------------
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self.combo_box_entries = ['RGB Color', 'HSV Color',
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'Brightness', 'Contrast']
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self.combo_box = QtGui.QComboBox()
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for entry in self.combo_box_entries:
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self.combo_box.addItem(entry)
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self.combo_box.currentIndexChanged.connect(self.combo_box_changed)
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#---------------------------------------------------------------
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# RGB color sliders
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#---------------------------------------------------------------
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# radio buttons
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self.rgb_add = QtGui.QRadioButton('Additive')
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self.rgb_mul = QtGui.QRadioButton('Multiplicative')
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self.rgb_mul.toggled.connect(self.rgb_radio_changed)
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self.rgb_add.toggled.connect(self.rgb_radio_changed)
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# additive sliders
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self.rgb_add_sliders = NSliderBlock(3, [(-255, 255, 0, 'R', 1),
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(-255, 255, 0, 'G', 1),
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(-255, 255, 0, 'B', 1)],
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self.rgb_add_changed)
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# multiplicative sliders
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self.rgb_mul_sliders = NSliderBlock(3, [(0, 1000, 500, 'R', .002),
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(0, 1000, 500, 'G', .002),
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(0, 1000, 500, 'B', .002)],
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self.rgb_mul_changed)
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# layout
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self.rgb_widget = QWidget()
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self.rgb_widget.layout = QtGui.QGridLayout(self.rgb_widget)
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self.rgb_widget.layout.addWidget(self.rgb_add, 0, 0)
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self.rgb_widget.layout.addWidget(self.rgb_mul, 1, 0)
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self.rgb_widget.layout.addWidget(self.rgb_add_sliders, 2, 0)
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self.rgb_widget.layout.addWidget(self.rgb_mul_sliders, 2, 0)
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#---------------------------------------------------------------
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# HSV sliders
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#---------------------------------------------------------------
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# radio buttons
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self.hsv_add = QtGui.QRadioButton('Additive')
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self.hsv_mul = QtGui.QRadioButton('Multiplicative')
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self.hsv_mul.toggled.connect(self.hsv_radio_changed)
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self.hsv_add.toggled.connect(self.hsv_radio_changed)
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# additive sliders
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self.hsv_add_sliders = NSliderBlock(3, [(-180, 180, 0, 'H', 1),
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(-100, 100, 0, 'S', .01),
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(-100, 100, 0, 'V', .01)],
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self.hsv_add_changed)
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# multiplicative sliders
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self.hsv_mul_sliders = NSliderBlock(3, [(-180, 180, 0, 'H', 1),
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(0, 1000, 500, 'S', .002),
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(0, 1000, 500, 'V', .002)],
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self.hsv_mul_changed)
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# layout
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self.hsv_widget = QWidget()
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self.hsv_widget.layout = QtGui.QGridLayout(self.hsv_widget)
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self.hsv_widget.layout.addWidget(self.hsv_add, 0, 0)
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self.hsv_widget.layout.addWidget(self.hsv_mul, 1, 0)
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self.hsv_widget.layout.addWidget(self.hsv_add_sliders, 2, 0)
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self.hsv_widget.layout.addWidget(self.hsv_mul_sliders, 2, 0)
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#---------------------------------------------------------------
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# Brightness sliders
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#---------------------------------------------------------------
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# sliders
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self.bright_sliders = NSliderBlock(2, [(-255, 255, 0, '+', 1),
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(0, 1000, 500, 'x', 0.002)],
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self.bright_changed)
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# layout
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self.bright_widget = QWidget()
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self.bright_widget.layout = QtGui.QGridLayout(self.bright_widget)
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self.bright_widget.layout.addWidget(self.bright_sliders, 0, 0)
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#---------------------------------------------------------------
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# Buttons
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#---------------------------------------------------------------
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self.commit_button = QtGui.QPushButton('Commit')
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self.commit_button.clicked.connect(self.commit_changes)
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self.revert_button = QtGui.QPushButton('Revert')
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self.revert_button.clicked.connect(self.revert_changes)
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#---------------------------------------------------------------
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# Mixer Layout
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#---------------------------------------------------------------
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self.layout = QtGui.QGridLayout(self)
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self.layout.addWidget(self.combo_box, 0, 0)
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self.layout.addWidget(self.rgb_widget, 1, 0)
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self.layout.addWidget(self.hsv_widget, 1, 0)
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self.layout.addWidget(self.bright_widget, 1, 0)
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self.layout.addWidget(self.commit_button, 2, 0)
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self.layout.addWidget(self.revert_button, 3, 0)
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#---------------------------------------------------------------
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# Initialization
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#---------------------------------------------------------------
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self.combo_box.setCurrentIndex(0)
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self.hide_sliders()
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self.rgb_widget.show()
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self.rgb_mul.setChecked(True)
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self.hsv_mul.setChecked(True)
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def rgb_add_changed(self, name, val):
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if not self.rgb_add.isChecked():
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return
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if name == 'R':
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self.mixer.add(self.mixer.RED, val)
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elif name == 'G':
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self.mixer.add(self.mixer.GREEN, val)
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elif name == 'B':
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self.mixer.add(self.mixer.BLUE, val)
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else:
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return
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self.update()
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def rgb_mul_changed(self, name, val):
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if not self.rgb_mul.isChecked():
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return
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if name == 'R':
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self.mixer.multiply(self.mixer.RED, val)
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elif name == 'G':
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self.mixer.multiply(self.mixer.GREEN, val)
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elif name == 'B':
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self.mixer.multiply(self.mixer.BLUE, val)
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else:
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return
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self.update()
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def hsv_add_changed(self, name, val):
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if not self.hsv_add.isChecked():
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return
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h = self.hsv_add_sliders.sliders['H'].conv_val()
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s = self.hsv_add_sliders.sliders['S'].conv_val()
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v = self.hsv_add_sliders.sliders['V'].conv_val()
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self.mixer.hsv_add(h, s, v)
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self.update()
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def hsv_mul_changed(self, name, val):
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if not self.hsv_mul.isChecked():
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return
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h = self.hsv_mul_sliders.sliders['H'].conv_val()
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s = self.hsv_mul_sliders.sliders['S'].conv_val()
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v = self.hsv_mul_sliders.sliders['V'].conv_val()
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self.mixer.hsv_multiply(h, s, v)
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self.update()
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def bright_changed(self, name, val):
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# doesnt matter which slider changed we need both
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# values
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factor = self.bright_sliders.sliders['x'].conv_val()
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offset = self.bright_sliders.sliders['+'].conv_val()
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self.mixer.brightness(offset, factor)
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self.update()
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def reset_sliders(self):
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self.rgb_add_sliders.set_sliders({'R': 0, 'G': 0, 'B': 0})
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self.rgb_mul_sliders.set_sliders({'R': 500, 'G': 500, 'B': 500})
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self.hsv_add_sliders.set_sliders({'H': 0, 'S': 0, 'V': 0})
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self.hsv_mul_sliders.set_sliders({'H': 0, 'S': 500, 'V': 500})
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self.bright_sliders.set_sliders({'+': 0, 'x': 500})
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def combo_box_changed(self, index):
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self.reset_sliders()
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self.mixer.set_to_stateimg()
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self.update()
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combo_box_map={0: self.show_rgb, 1: self.show_hsv,
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2: self.show_bright, 3: self.show_contrast}
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combo_box_map[index]()
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def hide_sliders(self):
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self.rgb_widget.hide()
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self.hsv_widget.hide()
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self.bright_widget.hide()
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def rgb_radio_changed(self):
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if self.rgb_add.isChecked():
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self.rgb_add_sliders.show()
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self.rgb_mul_sliders.hide()
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elif self.rgb_mul.isChecked():
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self.rgb_mul_sliders.show()
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self.rgb_add_sliders.hide()
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else:
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pass
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self.reset_sliders()
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self.mixer.set_to_stateimg()
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self.update()
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def hsv_radio_changed(self):
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if self.hsv_add.isChecked():
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self.hsv_add_sliders.show()
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self.hsv_mul_sliders.hide()
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elif self.hsv_mul.isChecked():
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self.hsv_mul_sliders.show()
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self.hsv_add_sliders.hide()
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else:
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pass
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self.reset_sliders()
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self.mixer.set_to_stateimg()
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self.update()
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def show_rgb(self):
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self.hide_sliders()
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self.rgb_widget.show()
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def show_hsv(self):
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self.hide_sliders()
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self.hsv_widget.show()
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def show_bright(self):
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self.hide_sliders()
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self.bright_widget.show()
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def show_contrast(self):
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self.hide_sliders()
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def commit_changes(self):
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self.mixer.commit_changes()
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self.update()
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def revert_changes(self):
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self.mixer.revert()
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self.reset_sliders()
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self.update()
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class RGBHSVDisplay(QWidget):
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def __init__(self):
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QWidget.__init__(self)
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self.posx_label = QLabel('X-pos:')
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self.posx_value = QLabel()
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self.posy_label = QLabel('Y-pos:')
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self.posy_value = QLabel()
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self.r_label = QLabel('R:')
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self.r_value = QLabel()
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self.g_label = QLabel('G:')
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self.g_value = QLabel()
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self.b_label = QLabel('B:')
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self.b_value = QLabel()
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self.h_label = QLabel('H:')
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self.h_value = QLabel()
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self.s_label = QLabel('S:')
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self.s_value = QLabel()
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self.v_label = QLabel('V:')
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self.v_value = QLabel()
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self.layout = QtGui.QGridLayout(self)
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self.layout.addWidget(self.posx_label, 0, 0)
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self.layout.addWidget(self.posx_value, 0, 1)
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self.layout.addWidget(self.posy_label, 1, 0)
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self.layout.addWidget(self.posy_value, 1, 1)
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self.layout.addWidget(self.r_label, 0, 2)
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self.layout.addWidget(self.r_value, 0, 3)
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self.layout.addWidget(self.g_label, 1, 2)
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self.layout.addWidget(self.g_value, 1, 3)
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self.layout.addWidget(self.b_label, 2, 2)
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self.layout.addWidget(self.b_value, 2, 3)
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self.layout.addWidget(self.h_label, 0, 4)
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self.layout.addWidget(self.h_value, 0, 5)
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self.layout.addWidget(self.s_label, 1, 4)
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self.layout.addWidget(self.s_value, 1, 5)
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self.layout.addWidget(self.v_label, 2, 4)
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self.layout.addWidget(self.v_value, 2, 5)
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def update_vals(self, data):
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xpos, ypos, r, g, b, h, s, v = data
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self.posx_value.setText(str(xpos)[:5])
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self.posy_value.setText(str(ypos)[:5])
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self.r_value.setText(str(r)[:5])
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self.g_value.setText(str(g)[:5])
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self.b_value.setText(str(b)[:5])
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self.h_value.setText(str(h)[:5])
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self.s_value.setText(str(s)[:5])
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self.v_value.setText(str(v)[:5])
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class FancyImageWindow(ImageWindow):
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def __init__(self, arr, mgr):
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ImageWindow.__init__(self, arr, mgr)
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self.arr = arr
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self.label.setScaledContents(True)
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self.label.setMouseTracking(True)
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self.label.setMinimumSize(QtCore.QSize(100, 100))
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self.mixer_panel = MixerPanel(self.arr, self.refresh_image)
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self.layout.addWidget(self.mixer_panel, 0, 1, 2, 1)
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self.mixer_panel.show()
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self.rgb_hsv_disp = RGBHSVDisplay()
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self.layout.addWidget(self.rgb_hsv_disp, 1, 0)
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self.rgb_hsv_disp.show()
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self.layout.setColumnStretch(0, 1)
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self.layout.setRowStretch(0, 1)
|
|
|
|
def refresh_image(self):
|
|
pm = QPixmap.fromImage(self.label.img)
|
|
self.label.setPixmap(pm)
|
|
|
|
def scale_mouse_pos(self, x, y):
|
|
width = self.label.width()
|
|
height = self.label.height()
|
|
x_frac = 1. * x / width
|
|
y_frac = 1. * y / height
|
|
width = self.arr.shape[1]
|
|
height = self.arr.shape[0]
|
|
new_x = int(width * x_frac)
|
|
new_y = int(height * y_frac)
|
|
return(new_x, new_y)
|
|
|
|
def label_mouseMoveEvent(self, evt):
|
|
x = evt.x()
|
|
y = evt.y()
|
|
x, y = self.scale_mouse_pos(x, y)
|
|
r = self.arr[y,x,0]
|
|
g = self.arr[y,x,1]
|
|
b = self.arr[y,x,2]
|
|
h, s, v = self.mixer_panel.mixer.rgb_2_hsv_pixel(r, g, b)
|
|
self.rgb_hsv_disp.update_vals((x, y, r, g, b, h, s, v))
|
|
|
|
|
|
def imshow(arr, fancy=False):
|
|
global app
|
|
if not app:
|
|
app = QApplication([])
|
|
|
|
arr = prepare_for_display(arr)
|
|
|
|
if not fancy:
|
|
iw = ImageWindow(arr, window_manager)
|
|
else:
|
|
iw = FancyImageWindow(arr, window_manager)
|
|
|
|
iw.show()
|
|
|
|
def _app_show():
|
|
global app
|
|
if app and window_manager.has_windows():
|
|
app.exec_()
|
|
else:
|
|
print 'No images to show. See `imshow`.'
|