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Chip character anti-interference identification method and device

A recognition method and character technology, applied in character and pattern recognition, neural learning methods, image data processing, etc., can solve the problems of poor versatility and stability, high cost of manual detection, low accuracy, etc., to reduce some interference, The effect of improving recognition accuracy and anti-interference ability and reducing labor cost

Pending Publication Date: 2021-08-06
CHINA KEY SYST & INTEGRATED CIRCUIT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above problems, the present invention provides a method whose purpose is to replace manual character recognition and solve the problems of high cost, low efficiency and low accuracy of manual detection. Positioning and defect character anti-jamming ability, poor versatility and stability, etc., propose an efficient, accurate and strong anti-jamming ability combined with deep learning and machine vision, a universal and stable chip character anti-jamming recognition method, specific technical solutions as follows:

Method used

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  • Chip character anti-interference identification method and device
  • Chip character anti-interference identification method and device
  • Chip character anti-interference identification method and device

Examples

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Embodiment 1

[0084] like Figure 1 to Figure 7 As shown, a chip character anti-jamming recognition method comprises the following steps:

[0085] (1) Adjust the brightness of the light source and move the camera position so that the contrast between the characters on the chip and the background is as follows figure 2 effect, the outline of characters is clearly visible;

[0086] (2) The template of the IC chip to be recognized is called from the chip template library, and the camera captures a frame of IC chip image, based on the called template, the chip template is searched in the entire area of ​​the collected image, and two data are output after the template is matched, namely The position and direction of the template matching, this direction is the Angle of the placement direction of the chip, set the correct placement angle to 0°, if |Angle|>5°, it is judged that the placement direction of the chip is wrong, in the display software The interface prompts that the direction is wron...

Embodiment 2

[0118] like Figure 8 As shown, a chip character anti-interference recognition device includes a detection device 1, a light source 2, an image acquisition device 3, a display device 4, a visual processing device 5, an alarm device 6 and a multilayer perceptron.

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Abstract

The invention relates to a chip character recognition method, in particular to a chip character anti-interference recognition method, which comprises the following steps of: (1) setting a camera and a light source; (2) calling a template, acquiring a frame of image by a camera, matching the frame of image with the template, and extracting a chip image only containing a chip; (3) extracting a chip character image only containing a character region; (4) sequentially carrying out noise reduction processing and threshold segmentation on the chip character image to obtain a binary image, and carrying out character segmentation on the binary image to obtain single characters; (5) performing character defect detection to obtain defect characters; (6) performing defect character optimization and character recognition: (6-1) performing defect character optimization; and (6-2) performing artificial neural network character recognition to obtain a final character string. According to the method, part of interference of the environment can be effectively reduced during image acquisition, errors of the placement angle of the chip are prevented, and the method cooperates with other detection equipment, so that the labor cost is remarkably reduced, and the production efficiency is improved.

Description

technical field [0001] The invention relates to a chip character recognition method, in particular to a chip character anti-interference recognition method and device. Background technique [0002] Chip is an important product in the information age. It is widely used in various electronic devices, which promotes the progress of the whole society, and is also an important factor affecting the development of high-end manufacturing. The manufacturing process of the chip is extremely complex and precise, and each production step needs to be strictly controlled, so the quality inspection of the chip is particularly important. The surface of the chip package contains character information such as model number, serial number, and batch number, which can be traced back to its source. Therefore, chip character detection is of great significance as an important part of chip quality detection. At present, chip character detection is mostly performed by manual intervention for viewing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/32G06K9/34G06K9/40G06N3/04G06N3/08G06T7/11G06T7/136G06T7/62
CPCG06T7/11G06T7/136G06T7/62G06N3/08G06T2207/20104G06T2207/10004G06T2207/20081G06T2207/30148G06V10/25G06V30/153G06V10/30G06N3/045
Inventor 朱涛王小龙王志伟刘天赐郝培霖赵钰杨一粟
Owner CHINA KEY SYST & INTEGRATED CIRCUIT
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