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This paper presents a study on joint coding of video plus depth utilizing the correlation between video and depth. The Rate Distortion Optimization (RDO) technique has been employed in H.264 for intra prediction mode selection to achieve better coding efficiency. The proposed method considers the color video and depth video to compress jointly, which is based on the RDO mode decision algorithm and...
The objective of this paper is to propose robust, three-step, and spatiotemporal structured light patterns for rapid 3D shape inspection system. To reduce the negative influence of inspected part texture and ambient light, the patterns are constructed by stripe boundary using monochromatic light. The stripe sequence is generated by the Euler Circuit of graph theory under the proposed constraints in...
Speaker lip motion stands out as the most linguistically relevant visual feature for speech recognition. Lip reading is an active field that receives much attention from computer scientists. Its applications take part not only in science, such as a speech recognition system, but also in social activities, such as teaching pronunciation for deaf children in order to recover their speaking ability,...
Three dimensional optic measurement system's accuracy is highly related with the field of inspection. Increasing of field inspection costs increasing camera / projector pixel area on the test surface. Small surface changes within one pixel area cannot be directly detected, which will lower the system accuracy. A pixel-to-pixel strategy is developed to solve this problem. Increasing field of inspection...
The objective of this paper is to propose a robust one shot structured light pattern for real time 3D shape inspection system. To reduce the influence of inspected part reflectance property and ambient light, the pattern is constructed by using monochromatic light. The corner of the chessboard is utilized as the primitive of the pattern since it can provide highly accurate position. Additionally,...
The objective of this paper is to propose a wind- shield surface shape and optical parameters inspection system. In this paper, a white board works as a diffuse planar light source projecting structured light patterns because physical properties of specular surface do not allow us to directly apply the triangulation-based techniques used in ordinary diffuse surface inspection. The board is placed...
In this paper, we present a tree-like blood vessels based on the region growing algorithm and level sets method for computing centerlines for both 2D and 3D shape analysis. Consider the tree-like vascular structure, we first use region growing technology to generate the shortest distance from the given root to all the pixels, ground on the distance can detect all the extreme nodes of branches automatically...
Image inpainting is an important element in image restoration study, whose purpose is to restore the lost information automatically based on existing information. Image inpainting can be used to restore damaged images and videos, remove text and hidden errors on videos, and so on. Although the basic idea of the image inpainting is very simple, many of the image inpainting algorithms are very complex...
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