CODEWITHSUNDEEP
opencvimage-processingcolorscomputer-visionscikit-image
TMN
TMN

Reputation: 153

Converting colored image to grayscale

I am working on processing images that consists of colors that have the same grayscale. In other words, each image is colored with random colors that have the same gray value.

When I converted the image using (rgb2grey() from skimage or cv2.cvtColor() from OpenCV), the resulted image has only one gray value (or slightly difference gray values (unperceivable by human eyes). Therefore, the resulted image details unrecognizable.

My questions are:

  1. What are the best way to do before converting these images to grayscale ones? (Please note the colors of these images are not fixed)

  2. Are there any color combinations for which the color-gray conversion algorithms won't work?

Upvotes: 1

Views: 260

Answers (1)

HansLee
HansLee

Reputation: 43

How about using YCbCr?

Y is intensity, Cb is the blue component relative to the green component and Cr is the red component relative to the green component. So I think YCbCr can differentiate between multiple pixels with same grayscale value.

Upvotes: 1

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