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imagebmp

why 1x1 size 8bit bmp is 1082 bytes 24 bit is just 58 bytes?

Is this extra headers? I want a simple two color (black and white) 8 bit image to be created from a binary array I am getting from another program. Any suggestions?

NS

Solution

  • The 8 bit BMP uses a color table, which has 256 entries (one for each byte value) 4 bytes each (3 for RGB and 1 for alpha or just for alignment). (But: read the comment by user763305.)

    Anyway, have a look at the PNG format, it is usually the easiest format for lossless image file interchange. You can choose between 1-bit grayscale (i.e., B&W) and 8-bit grayscale.