Method for identifying information of image tag
A technology of information recognition and image labeling, applied in the field of image processing, can solve problems such as slow recognition speed, low recognition accuracy, and narrow application range, and achieve fast operation, good noise resistance, and wide application range
Inactive Publication Date: 2010-08-18
SHANGHAI JIAO TONG UNIV
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However, the disadvantages of the above two technologies are: narrow application range, slow recognition speed, and low recognition accuracy
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[0041] This example is used to figure 2 The image to be recognized is identified, and the flow chart is as follows figure 1 As shown, it specifically includes the following steps:
[0042] Step 1: collect several template images, the background of the template images is not limited, but the non-template area around the template images is as small as possible, so as to establish a template image library.
[0043] The template image library of this embodiment is as image 3 as shown, image 3 Include the image to be recognized.
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The invention relates to a method for identifying information of an image tag in the technical field of image processing. The method comprises the following steps of: building a template image library; performing Hessian characteristic point detection on a template image and an image to be identified respectively; performing SURF characteristic extraction and LBP characteristic extraction on each characteristic point in the template image and the image to be identified respectively; performing SURF characteristic matching on the image to be identified and the template image to acquire the template image successfully prematched; performing LBP characteristic matching on the image to be identified and the template image successfully prematched to acquire the template image successfully prematched for the second time; and weighting the template image successfully prematched for the second time, wherein the template image with the maximum weight value is the template image most matched with the image to be identified. The method can effectively identify the image tag with complex background, scale change, direction change and visual angle change, avoids large-scale machine learning and complex image preprocessing at the same time, and has the advantages of high calculation speed, high identification accuracy rate and wide application scenarios.
Description
technical field [0001] The present invention relates to a method in the technical field of image processing, in particular to a method for identifying image tag information. Background technique [0002] At present, image-based label recognition technology is widely used. This technology can identify specific labels in an image or a video frame, including station logos, trademarks, logos, advertising signs, etc., in advertising information statistics, pictures / It has very important and extensive applications in the fields of video retrieval and bad multimedia information screening. [0003] Conceptually, label recognition can be expanded to object recognition technology, which has been developed in depth in the West. However, traditional label recognition focuses on the characteristics of objects such as structure, shape, color, and statistical information. However, there is a big problem in this way, that is, The anti-interference is relatively poor, and the size, deforma...
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Inventor 孙锬锋蒋兴浩冯冰傅光磊李荣杰
Owner SHANGHAI JIAO TONG UNIV
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