Bildcodierungsvorrichtung, Bildcodierungsverfahren, Bilddecodierungsvorrichtung, Bilddecodierungsverfahren und Computerprogramm

Details

Veröffentlichungs-Nr.

EP4787838

Anmeldetag

9. August 2024

Veröffentlichung

3. April 2025

Rechtsraum

EP

Abstract

A prediction image is generated from encoded pixels for a block of interest having a predetermined size as an encoding target in an image, prediction errors that are a difference between the block of interest and the prediction image is derived, the prediction errors are frequency-transformed, and orthogonal transformation coefficients obtained by the frequency transformation is quantized. Then, the quantized orthogonal transformation coefficients are entropy-encoded, and reproduction orthogonal transformation coefficients are generated by inversely quantizing the quantized orthogonal transformation coefficients. The reproduction orthogonal transformation coefficients are corrected.

Anmelder

Firma

Canon Kabushiki Kaisha

Land

🇯🇵 Japan