从8位灰度图像中抓取像素

Question

I have 8 bit greyscale image. I need to grab pixels from it, to byte array. So one pixel=1byte in array, but grabber always grabs pixel as integer(4bytes). Do you kknow how to tell him to grab one pixel as one byte ?

Answer 1

Perhaps this question requires more clarification, but a 4-byte grayscale pixel will always be in the form 0x00ABABAB. Since AB are the same in the last 3 bytes, you can simply right shift off the bits that you need.