I want to read and write the bmp images in MATLAB as bits unless byte.
Sami Varjo
I suppose the smallest unit you can read/write is a byte via fread / fwrite and then you have to take care of the headers describing the image metadata. So I suggest to use the imread to get the image in Matlab. If you need to access single bits of pixels (or bytes), eg for forming a binary string, you can do that for example by invoking:
pixelValue_as_byte = 178;
Bits = bitand(pixelValue_as_byte, uint8(2.^(7:-1:0) )) > 0
To get the byte back from bits you simply sum the value of each bit together:
byte = sum(Bits .* [ 2.^(7:-1:0) ])
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