Download Advances in Image and Graphics Technologies: Chinese by Tieniu Tan, Qiuqi Ruan, Shengjin Wang, Huimin Ma, Kaiqi PDF

By Tieniu Tan, Qiuqi Ruan, Shengjin Wang, Huimin Ma, Kaiqi Huang

This booklet constitutes the referred lawsuits of the eighth China convention on photograph and pics applied sciences and functions, IGTA 2014, held in Beijing, China, in June 2014. The 39 papers awarded have been rigorously reviewed and chosen from a hundred and ten submissions. They disguise a variety of points of analysis in picture processing and photos and comparable themes, together with item detection, trend acceptance, item monitoring, class, snapshot segmentation, reconstruction, etc.

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Extra resources for Advances in Image and Graphics Technologies: Chinese Conference, IGTA 2014, Beijing, China, June 19-20, 2014. Proceedings

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They are tiles, macroblocks and blocks. Fig. 1. An exam mple of hierarchical image partitioning in JPEG XR Tile size has to be decid ded at the beginning of JPEG XR compression since iit is largely related to the hardw ware architecture [5]. 2 Comparative Study of Near-Lossless Compression 31 Macroblock is a basic data unit in JPEG XR. The size of a macroblock is predefined by the standard. One tile consists of NxM Macroblocks and one macroblock consists of 4x4 blocks which consists of 4x4 pixels.

L For dealing with color images, each color channel will be fused separately. Fig. 2. Pyramid collapsing 5 Experiments Analysis and Evaluation In order to test the proposed multi-focus capture and fusion system, several data sets have been captured by the device. Each data set has different focuses and its resolution is 2144×1424 pixels. The proposed fusion method is compared with other multifocus fusion methods such as average method and wavelet method [17-19]. In the experiments, standard deviation, information entropy and average gradient are used to A Novel Multi-focus Image Capture and Fusion System for Macro Photography 25 evaluate the multi-focus image fusion result objectively.

264 and JPEG 2000 is far more complex than JPEG XR [8,9] 4 Conclusion In this paper, we firstly introduced JPEG XR standard, then we deeply evaluated the influence of three parameters on rate-distortion curve, including TileSize, OverlapFilter and Trimflexbits. It is found that TileSize=512x512, OverlapFilter=1 and Trimflexbits=0 is best combination for the high compression efficiency of 4K images. After that, a simple evaluation methodology has been used to compare the compression performance between JPEG XR, JPEG 2000 and AVC inter and intra profile for compression of 4K video sequences.

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