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fix error in autolevel and percentile autolevel (16bit)

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This commit is contained in:
Olivier Debeir
2012-10-16 11:13:09 +02:00
parent 0e7271bfb4
commit f35cd7aa3a
2 changed files with 11 additions and 4 deletions
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skimage/rank/_crank16_percentiles.pyx
+1 -1
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@@ -33,7 +33,7 @@ cdef inline np.uint16_t kernel_autolevel(Py_ssize_t* histo, float pop, np.uint16
delta = imax-imin
if delta>0:
return <np.uint16_t>(255*(int_min(int_max(imin,g),imax)-imin)/delta)
return <np.uint16_t>(1.0*(maxbin-1)*(int_min(int_max(imin,g),imax)-imin)/delta)
else:
return <np.uint16_t>(imax-imin)
else:
skimage/rank/tests/demo_single.py
+10 -3
View File
@@ -16,15 +16,22 @@ if __name__ == '__main__':
f16= rank.autolevel(a16,selem)
f16p= rank.percentile_autolevel(a16,selem,p0=.0,p1=1.)
print f8==f16
print f16==f16p
plt.figure()
plt.subplot(1,2,1)
plt.subplot(1,3,1)
plt.imshow(f16)
plt.subplot(1,2,2)
plt.colorbar()
plt.subplot(1,3,2)
plt.imshow(f16p)
plt.colorbar()
plt.subplot(1,3,3)
plt.imshow(f16p-f16)
plt.colorbar()
plt.show()
print f16
print f16p