In this paper, we propose a novel multi-encoding method for high efficiency intra-frame coding using multiple hybrid coders that combine non-causal interpolative prediction and orthogonal transforms. For hybrid coders, we set 11 different coding modes that employ different orthogonal transforms and the quantization scan orders. For each 8×8 block, computing in parallel the coding errors of all the coding modes, we adaptively select the best mode that gives the minimum error and then send their quantization information with the selected mode number as the overhead information. The simulation results using the standard test images showed that compared to H.264 (with high complexity mode) the proposed method performs better in the higher coding rate and improves PSNR by 6 dB at most.

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“Tour Into the Picture (TIP)” is one of image-based rendering methods for walk-through from a single image. A problem of TIP is that it cannot be applied when the movement of viewpoint is large because foreground objects are at plates. To solve the problem, this paper proposes a method to generate three dimensional models of foreground objects. The method is based on sweep method, and generates the models with bumpy surface by using Fractal algorithm. Comparisons with manually-produced three dimensional models show that the proposed method takes a shorter time to generate the models. Moreover, subjective evaluation experiments show that the method generates natural three dimensional models appropriate for the foreground object image.

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Unlike the research of 2D tracks recognition, both techniques and concrete application examples of 3D tracks recognition are extremely few. Part of the reason of this is that the classification of 3D orbits is more complicated than that of 2D tracks. To overcome this problem, we previously examined the recognition of the sign language operation by Procrustes analysis. Procrustes analysis is a technique to compare two ordered data under various linear transformations which give flexibility to pattern deformation. However, it has some drawbacks in applying to pattern recognition problems; the transformation is asymmetry, and the definition of the prototypes is not clear. This paper explains our proposed methods to produce prototypes for Procrustes analysis, and the experiment which support them. To overcome these drawbacks, we propose some methods to produce prototypes for Procrustes analysis. We evaluated our proposed method by applying them to the spatio-temporal data of 11 sign language words, and we have achieved up to 87% recognition rate.

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Personal identification by handwriting in forensic science (scientific criminal investigation) is a typical application field of the text-dependent and off-line writer verification. However, it still stays at the research and development stage, and it has not arrived at the situation of being practicably used in the handwriting identification. This paper proposes a simple writer verification method for Japanese character (Hiragana, Katakana, numeral, and Chinese character) based on only layout pattern of strokes. Though only a limited feature for handwriting is utilized in the proposed method, verification experiments on the samples of about 100 to 300 writers showed verification rate of 99.9% above(practical use level) in the case of using four characters. Verification characteristics for Hiragana, Katakana, numeral, and Chinese character are also evaluated in this paper.

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In this paper, we describe a configuration and an operation of the system for simultaneous shooting that is performed by multiple smartphones. If we want to integrate information obtained by the multi-view video shooting, it is necessary to manage a time and frame synchronization. However, if each of them is freely shot, it’s difficult to find corresponding frames between the videos for the integration. To solve this, we propose a method of a simultaneous operation of shooting equipments. Information, such as mutual displacement between internal clocks of each terminal, and the terminal-specific delay from required camera operation for start of shooting. To eliminate the shift of the time, we corrected terminals time by NTP: Network Time Protocol. We also considered about variance of delay features in several types of terminals. As experimental results, we confirmed simultaneous control of 15 terminals in the displacement of about 110 ms at most, for the start time of the shooting control.

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