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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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, the disadvantages of the above two technologies are: narrow a

Method used

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  • Method for identifying information of image tag
  • Method for identifying information of image tag
  • Method for identifying information of image tag

Examples

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Example Embodiment

[0040] Example

[0041] This embodiment is used to figure 2 The image to be recognized is shown for recognition, and the flow chart is as follows figure 1 As shown, it specifically includes the following steps:

[0042] Step 1: Collect a number of template images. The background of the template image is not limited, but the non-template area around the template image is as small as possible, so as to establish a template image library.

[0043] The template image library of this embodiment is such as image 3 As shown, image 3 Include the image to be recognized.

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Abstract

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...

Claims

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Application Information

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IPC IPC(8): G06K9/62G06K9/52
Inventor 孙锬锋蒋兴浩冯冰傅光磊李荣杰
Owner SHANGHAI JIAO TONG UNIV
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