Image/video segmentation is a basic but important step in image processing. In some basic image processing works such as video analysis, video object recognition, etc., or some high level applications such as military surveillance, content-based video retrieval, etc., all the frames have to be segmented into meaningful parts at first. And then those parts can further be processed. MPEG-4 multimedia communication standard enables the content-based functionalities by using the video objects plane as the basic coding element. From the point of view of human vision system, video segmentation segments meaningful parts from the video stream that conform to what human vision feels. Because while seeing a scene by human naked eye, the scene is composed of many objects, not pixel by pixel. In this thesis, we will focus on the image/video segmentation and its applications.
One of our goals in this thesis is to design and implement an image/video segmentation system based on existing methods, which are widely used in image/video segmentation nowadays. We decompose the system into several stages, each of which performs a specific task. Then, based on the output of each stage, we can refine the algorithms in that stage to obtain a better result.
We can retrieve areas from image data which more accurately conform to what human vision system feels. In other words, we retrieve the moving part, say, foreground, from the static background. After obtaining the segmentation results, a compression algorithm such as MPEG-4 can be used to compress these retrieved regions, which is referred to as content-based coding. Besides, other image processing applications can be further developed. For example, remote surveillance and monitoring system can be developed for detecting the moving objects using the segmentation algorithms described in this thesis.
| Identifer | oai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0822106-131238 |
| Date | 22 August 2006 |
| Creators | Liang, Wen-yan |
| Contributors | Ming-chao Chiang, Chung-nan Lee, Shiann-Rong Kuang |
| Publisher | NSYSU |
| Source Sets | NSYSU Electronic Thesis and Dissertation Archive |
| Language | English |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0822106-131238 |
| Rights | not_available, Copyright information available at source archive |
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