Difference images are used in various image processing applications such as change detection, radar imaging, remote sensing, and biomedical image analysis The difference image, or difference picture, is found by subtracting one image from.another. OnEpractical problem with difference images is that, if the images are not in perfect spatial registration before subtraction, their difference image...

Lossless image compression is critical task in image processing. Vector quantization method is fast compression method of image compression, but this is lossy technique of image compression. But gives the better compression ratio and PSNR value. the better compression rate can be achieved by vector quantization (VQ) and SVQ scheme, but the quality of the recovered image is about 16 to 47 dB in ...

We propose two novel image difference metrics using an extension of the S-CIELAB framework, which are based on the Difference of Gaussians model. The first metric uses the Difference of Gaussians model as a basis for the spatial filtering with the ∆E ab as a color difference formula, while the second uses the same model in association with the ∆EE color difference formula. A dataset with 20 gam...