Deblocking DCT compressed images

Albert J. Ahumada Jr.; Rensheng Horng

doi:10.1117/12.172662

1 May 1994 Deblocking DCT compressed images

Albert J. Ahumada Jr., Rensheng Horng

Proceedings Volume 2179, Human Vision, Visual Processing, and Digital Display V; (1994) https://doi.org/10.1117/12.172662
Event: IS&T/SPIE 1994 International Symposium on Electronic Imaging: Science and Technology, 1994, San Jose, CA, United States

Abstract

Image compression based on quantizing the image in the discrete cosine transform (DCT) domain can generate blocky artifacts in the output image. It is possible to reduce these artifacts and rms error by correcting DCT domain measures of block edginess and image roughness, while restricting the DCT coefficient values to values that would have been quantized to those of the compressed image.

Citation Download Citation

Albert J. Ahumada Jr. and Rensheng Horng "Deblocking DCT compressed images", Proc. SPIE 2179, Human Vision, Visual Processing, and Digital Display V, (1 May 1994); https://doi.org/10.1117/12.172662

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