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PIXEL VALUE NORMALIZATION 0 and 1

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Serife Kaba
Serife Kaba 2021-12-20
编辑： Serife Kaba 2021-12-21
Dear Sir/Madam,
I have DICOM images taken from the angiography device and I labeled my images using Adobe Photoshop, then painted the background with black and the part I labeled with white.
I exported the labelled images in png format from photoshop.
However, the images appearing in black and white are in RGB format, although I converted the image to binary with the MATLAB program, all numbers appear as 2 in the pixel range.
How can I make 0 and 1 pixel interval for binary images ? I would be grateful if you can help me
Best regards
Şerife Kaba
  2 个评论
Matt J
Matt J 2021-12-20
I suggest attaching the RGB image so that we can demonstrate.
Serife Kaba
Serife Kaba 2021-12-21
Thank you so much . I attached the image below which taken from photoshop (RGB image )
Best regards

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采纳的回答

Walter Roberson
Walter Roberson 2021-12-21
Although you posted a PNG image, we can tell that at some point the image had been saved in jpeg format, which has resulted in some boundary pixels being blurred.
IM47 = imread('IM-0001-0047.png');
BW47 = imbinarize(rgb2gray(IM47));
Now BW47 will be the binary labels that you need.

更多回答（1 个）

yanqi liu
yanqi liu 2021-12-21
yes，sir，may be the image file save be Photoshop get rgb format，so we read it to logical，such as 0 and 1 value
may be use
im2uint8(your_logical_label_matrix)
make the value to 255（white）、0（black）
and use
classNames = ["target","background"];
labelIDs = [255 0];
to generate pixelLabelDatastore

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