stegoPromedium

Rainbow QR (3bdf7da0-991d-46bf-aa92-e4dcd4ef692f)

hackerlab

Task: Two rainbow gradient images (rainbow1.jpg, rainbow2.jpg) of identical dimensions. Solution: Compute absolute pixel difference between images, apply threshold binarization, use morphological operations (dilation/erosion) to clean up noise, then decode the hidden QR code.

$ ls tags/ techniques/
image_differenceqr_codexor_steganographymorphological_operationsopencvthreshold_binarizationpixel_comparisonnoise_removal
Image difference analysis (pixel-by-pixel comparison)Threshold binarization to extract hidden patternMorphological operations (dilation/erosion) for noise removalQR code detection and decoding
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