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  2. rgb_image = cv2.cvtColor(binary_image, cv2.COLOR_GRAY2RGB) * 255 There can be a case when you think that your image is a gray-scale one, but in reality, it is a binary image. In such a case you have an array of 0's and 1's where 1 is white and 0 is black (for example). In RGB space, pixel values are between 0 and 255.

  3. Conversion of a grayscale to RGB is simple. Simply use R = G = B = gray value. The basic idea is that color (as viewed on a monitor in terms of RGB) is an additive system.

  4. When the values in a pixel across all 3 color channels (RGB) are same then that pixel will always be in grayscale format. One of a simple & intuitive method to convert a RGB image to Grayscale is by taking the mean of all color channels in each pixel and assigning the value back to that pixel.

  5. In the Windows Api and GDI, you can use the default window background color for drawing buttons and stuff (that slight greyish color on Win98 , WinXP + Classic Theme etc. ). What is the rgb value ...

  6. Brightness on a CRT display is proportional to RGBlin = RGB ^ gamma, so 50% gray on a CRT is quite dark: .5 ^ 2.2 = 22% of maximum brightness. (LCD displays are more complex; furthermore, some graphics cards compensate for gamma.) To get the measure of lightness called L* from RGB, first divide R G B by 255, and compute

  7. When converting an RGB color to grayscale, the following weights are used: 0.2989, 0.5870, 0.1140. Source: Converting RGB to grayscale/intensity

  8. @orbit It's in an ideal case. However, there can be a greyscale image with the 3-channel image (RGB) where R == G == B as mentioned in other comments. The output is visually the same as a grey image, but it is RGB in metadata where this answer doesn't apply to that case.

  9. python - RGb to gray conversion in CV2 - Stack Overflow

    stackoverflow.com/questions/66635116

    I am trying to convert an image from RGB to grayscale. My image looks like this after reading. img = cv2.imread('sample.png') plt.imshow(img) I tried converting this to grayscale using cv2 function and the image looks as below after conversion: gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY) plt.imshow(gray)

  10. Python Pil Change GreyScale Tif To RGB - Stack Overflow

    stackoverflow.com/questions/18522295

    I have a greyscale TIF File. I need to convert it to RGB/ read from it in a way I can work with it. img = Image.open(GIF_FILENAME) rgbimg = img.convert('RGB') for i in range(5): print rgbimg.getpixel((i, 0)) The convert.("RGB") will automatically make everything (255,255,255) even though the picture is a really dark mostly black picture.

  11. The background color for a disabled input in chrome is rgb(235,235,228) if that helps .. – Adrift.