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Vol. 157, Issue 10, October 2013, pp. 206-212

 

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A New Kind of Sub-pixel Interpolation Filtering Algorithm and Hardware Structural Design
 
1, 2 Wang Gang, 1 Chen Hexin, 1 * Chen Mianshu, 1, 3 Liu Yuanyuan

1 School of Communication Engineering, Jilin University, Changchun 130000, China 2 School of Mechanical Engineering, Baicheng Normal College,
Baicheng 137000, China

3 School of Information Technology, Jinlin Agricultural University, Changchun 130000, China

* Tel.: 15843688099

* E-mail: haohehe530@163.com

 

Received: 11 July 2013   /Accepted: 25 September 2013   /Published: 31 October 2013

Digital Sensors and Sensor Sysstems

 

Abstract: Considering the problems of high complexity of sub-pixel interpolation operation and large visitor volume of storage in H.264/AVC standard, a kind of sub-pixel interpolation operation is put forward with changeable filter coefficient and unchangeable coefficient sum. According to the video image, filter coefficient can be confirmed. Based on the algorithm, a kind of 1/4 pixel precision interpolative hardware structural design. It is indicated by the performance analysis and filter structure that the structure is able to calculate pixel interpolation at different positions in a certain clock period with the characteristics of small area and fast speed. It is indicated by the result of experiment that compared with H.264 standard, new algorithm is able to reduce 18 % space complexity, improve noise ratio of peak, reduce bit rate and improve the performance of coding.

 

Keywords: H.264, Sub-pixel, Filter, Hardware structure.

 

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