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Calculation of interpolated pixel values

一种像素值、像素的技术，应用在计算、图像通信、图像数据处理等方向

Inactive Publication Date: 2007-01-03
CISCO SYST INT R L
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However data compression may be balanced with image quality

Method used

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  • Calculation of interpolated pixel values
  • Calculation of interpolated pixel values

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Embodiment Construction

[0021] The present invention is described below by describing preferred embodiments. However, those skilled in the art will appreciate that other applications and modifications within the scope of the present invention are defined in the appended claims.

[0022] Recently ITU and ISO / IEC jointly developed a new video compression standard. The official names of the common standards in the two standardization bodies are "ITU-T Recommendation H.264" and "ISO / IEC MPEG-4 (Part 10) Advanced Video Coding". The common standard will be referred to as H.264 / AVC hereinafter.

[0023] figure 1 An example of integer and fractional pixel positions according to the H.264 / AVC standard is shown.

[0024] In H.264 / AVC, the encoding method has been improved in terms of motion resolution and the number of pixels used for each interpolation. This method uses motion compensated prediction with up to 1 / 4 pixel accuracy. Even 1 / 8 pixel precision is defined, but not included in any files. figure...

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Abstract

The invention is related to video compression systems, and in particular to compression / decompression in digital video systems. The present invention discloses an alternative method to calculate values of interpolated pixel positions in a video picture.

Description

technical field [0001] The present invention relates to a video compression system, and more particularly to compression / decompression of digital video systems. Background technique [0002] Real-time dynamic image transmission is used in some applications, such as video conferencing, web conferencing, TV broadcasting, and video telephony, etc. [0003] However, since digital video is usually described by representing each pixel in the image with 8 bits (1 byte), representing a moving image requires a large amount of information. These uncompressed video data result in a large amount of bits and cannot be transmitted in real time on traditional communication networks and transmission lines due to limited bandwidth. [0004] Therefore, real-time video transmission requires a high degree of data compression. However data compression may be balanced with image quality. Consequently, much research has been done to develop compression techniques that allow real-time transmissi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N9/04G06T3/40H04N7/15H04NH04N7/01H04N7/12H04N7/26H04N7/36
CPCH04N7/364H04N19/0063H04N19/00739G06T3/4007H04N19/523
Inventor G·比约恩特盖得
Owner CISCO SYST INT R L
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