This paper describes a new system for extracting bibliography regions from the color image of a book cover. Following the preprocessing, there are color space segmentation and text region extraction processes. By comp...
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ISBN:
(纸本)0819430064
This paper describes a new system for extracting bibliography regions from the color image of a book cover. Following the preprocessing, there are color space segmentation and text region extraction processes. By comparing the text regions on front cover to those on spine, all text regions are classified into author region, title region, publisher region or other information region furthermore, and a bibliography image is obtained as a result.
We present a set of hierarchical expression rules based on which facial expression analysis in facial images can be carried out. The proposed expression rules describe an expression as a combination of facial actions,...
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ISBN:
(纸本)0819430064
We present a set of hierarchical expression rules based on which facial expression analysis in facial images can be carried out. The proposed expression rules describe an expression as a combination of facial actions, and a facial action as a combination of FFP movements. The FFP movements are specified both in direction range and in magnitude range. As the hierarchy of the: expression rules indicates, facial expression analysis boils down to the FFP tracking. We adopt a model-based approach to accomplish this task. Possible applications of expression analysis are presented, which includes expression recognition, facial image retrieval, and facial expression agent. Backgrounds of these applications are introduced and related key technologies are discussed.
Puny target detection is a common problem for imagerecognition. The main difficulty origins from that targets are puny and variable. This paper advances a detection algorithm called Flexible Receptive Field (FRF) tha...
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ISBN:
(纸本)0819430064
Puny target detection is a common problem for imagerecognition. The main difficulty origins from that targets are puny and variable. This paper advances a detection algorithm called Flexible Receptive Field (FRF) that gives a new way to detect puny target. FRF is like as a 'pupil' which can adjust itself size to acquire the maximum excitement intensity. Scanning a pending image with FRF, when a target falls into FRF, the excitement intensity will differ from that when there is not target. To reduce the overmuch computation due to flexibility, a fast algorithm with computation complexity O(n(2)) is advanced (similar to a normal filter operator). Experiments proved that FRF is a simple, fast and efficient method for puny target detection.
This paper proposed a method to segment the texture image based on multiscale analysis of wavelet transform. The features at different scales need study when the number of the textures is to be determined. The propose...
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ISBN:
(纸本)0819430064
This paper proposed a method to segment the texture image based on multiscale analysis of wavelet transform. The features at different scales need study when the number of the textures is to be determined. The proposed method firstly transform the texture image with wavelet transform, then extract texture features on different scales and different frequency, and perform the coarse segmentation on those different channels of the same scale and the different scales. kt last, the coarsely segmented results at same scale are incorporated together, followed by a inter-scale fusion procedure. Promising results have been achieved.
The application of mathematical morphology to edge enhancement of images is studied in this paper, and a morphological edge enhancing operator and its anti-noises counterpart are also presented. This morphological ope...
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ISBN:
(纸本)0819430064
The application of mathematical morphology to edge enhancement of images is studied in this paper, and a morphological edge enhancing operator and its anti-noises counterpart are also presented. This morphological operator enhances the gradients of edges while attenuates noises and preserves edges. It is showed by computer simulations that the gradient of edges is enhanced by the morphological edge enhancing operator and, then, the structure and feature of images are strengthened and edges can be easily extracted.
This paper studies on the multiresolution analysis and classification of the textured synthetic aperture radar (SAR) image using the wavelet transform (WT). The tree-structured WT algorithm is first employed to decomp...
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ISBN:
(纸本)0819430064
This paper studies on the multiresolution analysis and classification of the textured synthetic aperture radar (SAR) image using the wavelet transform (WT). The tree-structured WT algorithm is first employed to decompose a real-world textured SAR image, and to quantify different texture types in the image. Then, the pyramid-structured WT algorithm is applied in the multiresolution classification of the image. The classification result obtained demonstrates the advantage of the WT in the textured SAR image classification.
Fractal compression is an attractive compression method with the ability of high compression ratio. But there are also some problems that has not been well solved yet. The wavelet-based fractal compression method prop...
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ISBN:
(纸本)0819430064
Fractal compression is an attractive compression method with the ability of high compression ratio. But there are also some problems that has not been well solved yet. The wavelet-based fractal compression method proposed in this paper can not only make up its weakness, such as long encoding time, but also bring out its merits, such as high compression ratio (CR).
作者:
Chen, XZhu, GXZhu, YTHuazhong Univ Sci & Technol
Inst Pattern Recognit & Artificial Intelligence Elect & Informat Engn Dept State Educ Commiss Lab Image Proc & Intelligent C Wuhan 430074 Peoples R China
Though it promised a high compression ratio and high decompression quality, the low fractal image coding speed blocked its way to practical application. The main problem of the low coding speed is due to the long sear...
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ISBN:
(纸本)0819430064
Though it promised a high compression ratio and high decompression quality, the low fractal image coding speed blocked its way to practical application. The main problem of the low coding speed is due to the long searching time of matching between domain blocks and range blocks. Genetic algorithms (GAs) are well known as a search and optimization technique based loosely on the principles of natural selection. In order to decrease the coding time, here a method is proposed that employs Genetic algorithms to solve the matching problem of fractal image coding. Experimental results indicate that the introduction of GAs to fractal image coding is a good way to increase the speed of fractal image coding without decreaseing the image quality obviously.
Using JPEG standard, Color still images can be compressed in high ratios while good quality can be guaranteed. The framework of the JPEG is specified, but the recommended quantization table and the Huffman table can b...
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ISBN:
(纸本)0819430064
Using JPEG standard, Color still images can be compressed in high ratios while good quality can be guaranteed. The framework of the JPEG is specified, but the recommended quantization table and the Huffman table can be pruned according to the image's characteristic. In this paper, we put forward an adaptive-quantization approach which is compatible for the baseline JPEG. In our approach, we statistically calculate the image's average probability distributivity, which used as the threshold for the quantization. The quanti-table recommended by JPEG can then be justified with the characteristic of images and the average code-rate is noticeably dropped.
This paper describes a scalable architecture model that is suitable for multimedia image storage. In the architecture, the storage system is connected with networks so that direct data transfer between the clients and...
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ISBN:
(纸本)0819430064
This paper describes a scalable architecture model that is suitable for multimedia image storage. In the architecture, the storage system is connected with networks so that direct data transfer between the clients and the server is available. The clients can receive data from the storage subsystem directly without going through the server. Thus, the bottleneck of the server doesn't exist. The paper demonstrates the detailed storage architecture. Because of the new architecture, file system and lower level storage operations will change correspondingly, Therefore, corresponding file system support for the architecture is discussed.
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