python - Converting a PIL image to skimage? -


i have image loaded in code (very long , unnecessary, won't post here) need work on skimage detect blobs in image. reason of images , attempts have used don't work.

the image modified pil in code above make objects trying find white (255, 255, 255), , other pixels black. code needs identify positions of these. have tried many different things work (converting them numpy array, not converting them numpy array ect.)

i following these instructions : http://scikit-image.org/docs/dev/auto_examples/plot_blob.html basics, not tutorial, more example.

i think rgb2gray function being problematic returns nothing 0, whilst print(numpy.array(img)) returns values between 0 , 1, suggesting loss of information when rgb2gray called.

here code seems problematic:

img_gray = rgb2gray(numpy.array(img)) # convert numpy array skimage print(img_gray) print(numpy.array(img)) img_blobs = blob_doh(img_gray, threshold=0.01, max_sigma=500) print(img_blobs)

how can fix this?

edit:

here each of images, arrays , lists print:

[[ 0.          0.          0.         ...,  0.          0.          0.        ] #img_gray  [ 0.          0.00392157  0.01568627 ...,  0.          0.          0.        ]  [ 0.          0.01176471  0.05882353 ...,  0.          0.          0.        ]  ...,   [ 1.          0.99607843  0.96078431 ...,  0.          0.          0.        ]  [ 1.          1.          0.98039216 ...,  0.          0.          0.        ]  [ 1.          1.          0.99215686 ...,  0.          0.          0.        ]] [[[  0   0   0] #img   [  0   0   0]   [  0   0   0]   ...,    [  0   0   0] #img   [  0   0   0]   [  0   0   0]]   [[  0   0   0] #img   [  1   1   1]   [  4   4   4]   ...,    [  0   0   0] #img   [  0   0   0]   [  0   0   0]]   [[  0   0   0] #img   [  3   3   3]   [ 15  15  15]   ...,    [  0   0   0] #img   [  0   0   0]   [  0   0   0]]   ...,   [[255 255 255] #img   [254 254 254]   [245 245 245]   ...,    [  0   0   0] #img   [  0   0   0]   [  0   0   0]]   [[255 255 255] #img   [255 255 255]   [250 250 250]   ...,    [  0   0   0] #img   [  0   0   0]   [  0   0   0]]   [[255 255 255]   [255 255 255]   [253 253 253]   ...,    [  0   0   0]   [  0   0   0]   [  0   0   0]]] [] #img_blobs


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