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Spray code identification method and identification apparatus

A recognition method and coding technology, applied in the field of coding recognition, can solve the problems of computing efficiency and calculation accuracy, low code and algorithm reuse rate, etc.

Active Publication Date: 2018-03-30
武汉楚锐视觉检测科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that the reuse rate of codes and algorithms in the prior art is low, which brings about an increase in computational complexity to a certain extent, and has a certain impact on computational efficiency and computational accuracy.

Method used

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  • Spray code identification method and identification apparatus

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Embodiment 1

[0082] Embodiment 1 of the present invention provides a coding recognition method. First, it is necessary to obtain the original picture carrying the coding to be recognized. The acquisition method is usually through one or more cameras installed on the assembly line, from one or more angles captured, such as figure 1 As shown, the coding identification method includes:

[0083] In step 201, at least one feature filter is generated according to the pixel values ​​of the original picture.

[0084] Wherein, the at least one feature filter is arranged from high to low according to its pixel value. The pixel value size of the feature filter can be a feature filter with a size of 3×3 pixels (such as figure 2 As shown), it can also be a feature filter with a size of 5×5 pixels, or a feature filter with a size of 9×9 pixels, where the pixel gap between different feature filters is related to the resolution of the camera that acquires the original image Even, usually, the higher t...

Embodiment 2

[0115] The embodiment of the present invention also provides a coding recognition method. Compared with the coding recognition method described in Embodiment 1, both of them have in common that a feature filter is used, and the features processed by the feature filter are The picture completes the identification of the target inkjet code. However, in Embodiment 1, a similar pyramid idea is used, that is, the recognition process in the next-level feature picture uses the recognition result of the previous level or multi-level feature pictures, so that the calculation Compared with the existing technology, the complexity is greatly reduced; and the embodiment of the present invention further simplifies the method idea from the calculation process, and at the expense of the calculation complexity, a concurrent processing method is used to perform batch feature Recognition of the object in the picture, and finally obtain the target coding area, avoiding the need to consider whether...

Embodiment 3

[0138] The embodiment of the present invention also provides a code recognition device, such as Figure 11 As shown, it includes a feature filter generation module, a feature image generation module, an object recognition module and a target inkjet recognition module. Each module is connected in sequence, specifically:

[0139] The feature filter generation module is used to generate at least one feature filter according to the pixel values ​​of the original image.

[0140] A feature picture generating module, configured to use the at least one feature filter to perform convolution with the original picture to obtain a set of feature pictures after pixel adjustments of different degrees.

[0141] Wherein, the larger the pixel value of the feature filter, the higher the degree of blurring of the obtained feature image;

[0142] The object recognition module is used to extract corresponding feature pictures one by one according to the order of pixel values ​​from low to high, a...

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Abstract

The invention relates to the technical field of spray code identification and provides a spray code identification method and identification apparatus. The method comprises the steps of generating atleast one feature filter according to pixel values of an original picture; performing convolution with the original picture by using the at least one feature filter to obtain a group of feature pictures subjected to pixel adjustment of different degrees; according to a sequence of the pixel values from low to high, extracting the corresponding feature pictures one by one, and performing object identification; and if target spray nodes are not identified in a process of processing a group of feature filters, performing generation of a next group of feature filters, acquisition of correspondingfeature pictures and identification of corresponding targets, until the target spray nodes are identified. A method capable of recursively realizing target spray node identification is proposed; and by generating one or multiple groups of the feature filters and performing processing to obtain the feature pictures with different resolutions, a target spray code identification region can be quicklyand accurately found.

Description

【Technical field】 [0001] The invention relates to the technical field of code-spraying recognition, in particular to a code-spraying recognition method and a recognition device. 【Background technique】 [0002] In the prior art, there are different methods of code recognition methods depending on the format and content of the code. When the code is specifically a barcode, the identification method can be through laser scanning code technology, and the distribution of the barcode is identified according to the signal returned by the laser scanning, so as to complete the analysis of the barcode. When the spray code is specifically a two-dimensional code, the picture of the two-dimensional code is captured according to the shooting frame set by the camera, and the corresponding information content is obtained by analyzing the two-dimensional code in the picture. [0003] In addition to the above-mentioned types of coding, there is also a kind of realistic coding that is more in...

Claims

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Application Information

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IPC IPC(8): G06K9/32G06K9/62G06K9/46G06K7/14
CPCG06K7/1443G06V10/255G06V20/63G06V10/44G06F18/23G06F18/214
Inventor 钱成章美荣
Owner 武汉楚锐视觉检测科技有限公司
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