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You don't need to use exif data. Many tools use the often ignored alpha channel of each pixel. In this case, you have X x Y bytes of available storage where X a
by hoop 15y ago
You don't need to use exif data. Many tools use the often ignored alpha channel of each pixel. In this case, you have X x Y bytes of available storage where X and Y are the width and height of the image.
- baddox 15y agoFor lossless images, you could also use the least significant bit of each color channel of each pixel to represent your binary payload. I doubt this would be noticeable, especially with a photograph.