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Input: image where the feature vector will be findī. Input: image where the histogram value of LBP feature will be find, the radius of the sampling pointsī. Output: eucledian distance between two feature vectorsĪ. Input: feature vector of query image, feature vector of compared imageī.
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However, based on the paper, the accuracy of this method is less than 80% Details of What the Modules Do To run the matlab code, ou can do one of this: press play button above the code, or go to command window and type cbir then enterīecause it uses histogram for LBP, then it is quite robust to image size.For (1) Slow mode, run extractFeature.m then run cbir_rank.m, while for (2) Slow mode, open and run cbir_threshold.m.The threshold for each query image may be varied. That threshold is found after doing some tests on img_test. For cbir_threshold.m, threshold Values and Parameter Values The threshold I set on this program can be found in “th” variable. So, you should be able to track the program logic from the comments available. I already put comment in each different part of the program. So, when it walks to all images in image set, when it find the file similar with query image, it will skip and will not find the feature vector. So, if you want to change the query image, just change this into any image you want. The query image is set by filename variable in cbir_rank.m and cbir_threshold.m. If you want to change the image path, you may change the imgpath variable. In (2) Slow mode, you just run cbir_threshold.m. Selecting the Use memcpy for vector assignment parameter enables the associated parameter Memcpy threshold (bytes), which allows you to specify the minimum array size in bytes for which memcpy function calls should replace for loops in the generated code. If you want to change the image path, you must change the path in both extractFeature.m and cbir_rank.m.
#MATLAB VECTOR CODE FOR THRESHOLD HOW TO#
For (1), you should run extractFeature.m first, only then you run cbir_rank.m. Possible Duplicate: Given a vector a1,2, 3.2, 4, 5 and an element x3 In vector a, how to find the exact entry which is bigger than x Let's say a is a sorted vector.
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In (1) Fast mode, you extract the features from all the images, only then you find the similarity from the features. You can use this program in two modes i.e. Therefore, I avoid using GUI as I am not quite sure that the library of the GUI for each version of matlab is similar.
#MATLAB VECTOR CODE FOR THRESHOLD PORTABLE#
I tried to use as less toolbox as possible so the program is portable to all versions of Matlab. The images are downloaded from Program Design This repository contains Matlab code for paper entitled "An Integrated Approach to Content Based Image Retrieval". Matlab code for Content Based Image Retrieval
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