牛膝、川牛膝、防風(fēng)各組織、性狀的特征提取與模式識(shí)別
[Abstract]:Objective: to establish a method of stitching the microimages of Radix Achyranthes bidentata, Radix Achyranthes bidentata and Radix Astragali on cross section, and to extract the tissue distribution characteristics of Chinese medicinal materials. The characters of Chinese medicinal materials were extracted from the images of Radix Achyranthes bidentata, Radix Achyranthes bidentata and Radix Fangfeng. Combined with various digital image processing techniques, a medicinal identification system based on the tissue and character characteristics of Chinese medicinal materials was established to realize pattern recognition of traditional Chinese medicine images and to provide new ideas and methods for the study of traditional Chinese medicine identification. Methods: the method of tissue feature extraction and identification was as follows: the middle part of the sample was prepared by polyethylene glycol embedding method. Microscope and electronic eyepiece were used to photograph the whole transverse slice in turn. Using Matlab as the programming platform, the block matching method based on pyramid hierarchical search strategy is used for image registration, and the wavelet fusion algorithm based on direct average gray level adjustment is used for image fusion to complete the microscopic image mosaic of medicinal materials. The sobel operator based on improved four-direction edge detection and mathematical morphology are used to segment and extract the microscopic image. The pattern recognition is carried out by BP neural network method Bayesian classification method and k-nearest neighbor classification method. The method of character feature extraction and recognition: taking the image of medicinal materials by camera, taking Matlab as the programming platform, using the best threshold segmentation method of s component based on hsv color space to segment the image of medicinal materials, extracting the feature, using BP neural network method. Bayesian classification and K-nearest neighbor classification are used for feature recognition. Finally, a GUI. based on Matlab programming platform is constructed for the tissue features of medicinal materials and character features from image extraction to pattern recognition. Results: (1) the methods of stitching the microimages of Radix Achyranthes bidentata, Radix Achyranthes bidentata and Radix angelicae officinalis were established. (2) the Matlab programming platform was established for the mosaic of the images of Achyranthes bidentata and Radix Achyranthes bidentata. GUI of different medicinal materials and GUI. (3) of pattern recognition of Chinese medicinal materials were identified by using k- nearest neighbor classification, Bayesian classification and BP neural network method. In terms of tissue characteristics, different training samples were randomly selected. The average recognition rate of the three pattern recognition methods for medicinal materials was 93.898. 2% (n = 75). In terms of traits, different training samples were randomly selected. The average recognition rate of the three pattern recognition methods was 91.78% (n = 150), and the average recognition rate was 91.78% (n = 150). At the same time, the average recognition rate of the three pattern recognition methods for medicinal materials was 91.6% and 99.6% (n = 75), respectively, on the basis of the comprehensive tissue and character characteristics, and different training samples were selected randomly. The average recognition rates of the three pattern recognition methods were 91.6% and 99.6% (n = 75), respectively. In the experiment, Bayesian classification method was used to identify the samples with the highest recognition rate (99.6%). Conclusion: in microscopic image mosaic, block matching based on pyramid hierarchical search strategy is used for image registration, and wavelet fusion algorithm based on direct average gray level adjustment can ensure the speed of image stitching. The precision of image stitching is guaranteed, and it can be used in cross-section micro-image of Chinese herbal medicine. The selected feature extraction method is simple, fast and suitable for segmentation of various images and description of identification features of Chinese medicinal materials. The results of different pattern recognition methods in different medicinal materials were compared. Bayesian classification was used to identify the characters and tissue characteristics of medicinal materials, which provided the basis for the automatic identification of Chinese medicinal materials. The automatic identification GUI is a graphical user interface with human-computer interaction, which eliminates the tedious program code processing, and provides a more convenient and quick operation for automatic identification of Chinese medicinal materials.
【學(xué)位授予單位】:廣州中醫(yī)藥大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2017
【分類號(hào)】:R282.5;TP391.41
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