Optimal bit allocation for full-frame DCT coding schemes: application to cardiac angiography

Patricia V. Beretta; Remy Prost; Michel Amiel

doi:10.1117/12.174011

1 May 1994 Optimal bit allocation for full-frame DCT coding schemes: application to cardiac angiography

Patricia V. Beretta, Remy Prost, Michel Amiel

Proceedings Volume 2164, Medical Imaging 1994: Image Capture, Formatting, and Display; (1994) https://doi.org/10.1117/12.174011
Event: Medical Imaging 1994, 1994, Newport Beach, CA, United States

Abstract

This paper reports on a lossy compression method applicable to cardiac angiography. Full frame DCT coding has been investigated, using an optimized bit allocation and quantization scheme. We compared it to the standard JPEG method in the environment of a cardiac angiography system with dedicated visualization devices and post-processing. At a compression ratio 12:1, the image quality appeared to be better than the JPEG base-line compression. Owing to the principle of our method, no blocking effect is induced, whereas this is a critical drawback of the JPEG algorithm. Furthermore, the sharpness of fine details is better preserved.

Citation Download Citation

Patricia V. Beretta, Remy Prost, and Michel Amiel "Optimal bit allocation for full-frame DCT coding schemes: application to cardiac angiography", Proc. SPIE 2164, Medical Imaging 1994: Image Capture, Formatting, and Display, (1 May 1994); https://doi.org/10.1117/12.174011

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