Combined with the previous work of other researchers, a discussion is elaborately made on the key techniques concerning the capture of iris images, location of iris circle and coding of iris texture, and some improved and creative approaches to these problems are put forward.

Thirdly,we abandon the fake feature points and create the iris codes.

Directions of iris texture play an important role in iris recognition.

This paper presents a novel iris texture features extraction algorithm based on zero spectral moment filters(ZSMF).

Iris recognition, an emerging biometric technology, which exploits the uniqueness of human iris texture, can accomplish automatic personal identification .

Through an analysis of the structure and characteristics of video data, the paper describes methods to realize four important modules of the video coding system: scene analysis, shape coding, motion coding and texture coding.

In order to resolve the problem of hiding a mass of information in MPEG-4 video streams, after the research of MPEG-4 standard,an algorithm based on MPEG-4 texture coding is presented.

An information hiding algorithm based on MPEG-4 texture coding was proposed.

An improved texture encoding algorithm of arbitrarily shaped video object;

At the same time,evaluating indicators can be quantified with iris texture clarity and fine assessment of visibility.