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fix missing 0.5 factor in anisotropic segmentation tutorial

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dmici
2020-08-30 10:17:50 +02:00
parent 7ce56b3a47
commit 6876f3b91d
3 changed files with 11 additions and 9 deletions
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samples/python/tutorial_code/imgProc/anisotropic_image_segmentation/anisotropic_image_segmentation.py
+4 -4
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@@ -31,16 +31,16 @@ def calcGST(inputIMG, w):
# GST components calculations (stop)
# eigenvalue calculation (start)
# lambda1 = J11 + J22 + sqrt((J11-J22)^2 + 4*J12^2)
# lambda2 = J11 + J22 - sqrt((J11-J22)^2 + 4*J12^2)
# lambda1 = 0.5*(J11 + J22 + sqrt((J11-J22)^2 + 4*J12^2))
# lambda2 = 0.5*(J11 + J22 - sqrt((J11-J22)^2 + 4*J12^2))
tmp1 = J11 + J22
tmp2 = J11 - J22
tmp2 = cv.multiply(tmp2, tmp2)
tmp3 = cv.multiply(J12, J12)
tmp4 = np.sqrt(tmp2 + 4.0 * tmp3)
lambda1 = tmp1 + tmp4 # biggest eigenvalue
lambda2 = tmp1 - tmp4 # smallest eigenvalue
lambda1 = 0.5*(tmp1 + tmp4) # biggest eigenvalue
lambda2 = 0.5*(tmp1 - tmp4) # smallest eigenvalue
# eigenvalue calculation (stop)
# Coherency calculation (start)