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    • 7. 发明授权
    • Image recognition system
    • 图像识别系统
    • US5267332A
    • 1993-11-30
    • US49658
    • 1993-04-20
    • Mark A. WalchJohn A. Pawlicki
    • Mark A. WalchJohn A. Pawlicki
    • G06K9/68G06K9/44
    • G06K9/4638G06K9/469G06K2209/01
    • An image recognition system includes a method and apparatus in which images are characterized and compared on the basis of internal structure, which is independent of image size and image orientation. A library of reference images is first generated and stored, then each input image, or test image, is compared to the images stored in the library until a match is found. The image is represented in memory as nodes, lines, and curves. A plurality of descriptors, called reference keys and reference series, are generated for both the reference images and the test image. The reference library is screened for likely matches by comparing the descriptors for the test image to the descriptors in the reference images in the library. Inclusionary and exclusionary tests are performed. After screening, the each of candidate reference images is searched by comparing the pathway thorough the reference image and the pathway through the test image, and by the degree of correlation between the reference and test images. In addition, the link ratio, a measure of the portion of the test image actually matched to the reference image is computed. Searching criteria, like the screening criteria are based on internal image structure, so that the recognition process is independent of image size and image orientation.
    • 一种图像识别系统包括一种方法和装置,其中基于与图像尺寸和图像取向无关的内部结构对图像进行表征和比较。 首先生成并存储参考图像库,然后将每个输入图像或测试图像与存储在库中的图像进行比较,直到找到匹配。 图像在存储器中表示为节点,线和曲线。 为参考图像和测试图像生成多个描述符,称为参考键和参考系列。 通过将测试图像的描述符与库中参考图像中的描述符进行比较,可以对参考库进行筛选。 进行包容和排除测试。 筛选后,通过比较通过参考图像的路径和通过测试图像的路径以及参考和测试图像之间的相关程度来搜索每个候选参考图像。 此外,计算链路比,实际匹配于参考图像的测试图像的部分的度量。 搜索标准,如筛选标准是基于内部图像结构,使得识别过程与图像大小和图像取向无关。