System and method for performing region-based image retrieval using color-based segmentation
An image retrieval, image technology, applied in digital data information retrieval, image enhancement, image analysis and other directions
Inactive Publication Date: 2006-03-01
KONINKLIJKE PHILIPS ELECTRONICS NV
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- Application Information
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Problems solved by technology
For example, in conventional image segmentation techniques, non-uniform illumination produces non-uniformity in the value of image pixels in RGB color space and YUV color space
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[0021] discussed below Figure 1 to Figure 4 And the various embodiments used to illustrate the principles of the present invention in this patent document are for illustration only and should not be construed as limiting the present invention in any way. Those skilled in the art will understand that the principles of the invention may be implemented in any suitably arranged image retrieval system.
[0022] figure 1 An exemplary image retrieval system 100 according to one embodiment of the present invention is shown. Image retrieval system 100 includes image processing system 110 , external database 180 , monitor 185 and user device 190 . Image processing system 110 provides means for extracting region-based images from selected image files.
[0023] External database 180 provides a source for retrieving one or more digitized visual images and other information as needed. These databases may be provided by accessing a local area network (LAN), wide area network (WAN), the ...
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There is disclosed an image retrieval system for analyzing an image in a first color model format and detecting and retrieving from the image a selected image portion. The image retrieval system comprises an image processor for converting pixels in the image from the first color model format to a (Yr theta ) color model format, where Y is an intensity component indicating a total amount of light, r is a saturation component indicating an amount of white light mixed with a color of each pixel, and theta is a hue component indicating the color of each pixel. The image processor groups spatially adjacent pixels into image regions according to hue components of the adjacent pixels and performs a merging process wherein a first image region and an adjacent second image region are merged into a composite region if a hue difference between the first and second image regions is less than a predetermined hue difference threshold. The process is repeated to continually merge regions of similar hue until no further merges can be performed.
Description
technical field [0001] This invention relates generally to image retrieval systems, and more particularly to image retrieval systems for retrieving region-based images using color-based segmentation. Background technique [0002] The advent of digital television (DTV), the growing popularity of the Internet, and the introduction of multimedia consumer appliances such as compact disk (CD) and digital video disk (DVD) players have made vast amounts of multimedia information available to consumers. As video and animated image content becomes more readily available and products for using this content enter the consumer market, searching, indexing and identifying large amounts of multimedia data has become more challenging and important. [0003] The term "visual animation data" refers here to natural images, synthetic two-dimensional or three-dimensional worlds or a mixture of images and images. There are different criteria used to search and index the content of visual animati...
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Login to View More IPC IPC(8): G06T5/00G06F17/30G06T11/60G06T7/00G06V10/56H04N1/46H04N1/60
CPCG06K9/342G06F17/3025G06K9/4652G06T7/0081G06T2207/10016G06T7/11G06F16/5838G06V10/267G06V10/56
Inventor C·Y·卡伦Y·颜K·查拉帕利
Owner KONINKLIJKE PHILIPS ELECTRONICS NV