Image retrieval method based on weight color-sift feature dictionary
A feature dictionary and image retrieval technology, which is applied in electronic digital data processing, special data processing applications, instruments, etc., can solve the problems of increasing computational complexity, complex similarity measurement, returning retrieval result set callback rate and retrieval rate, etc. Achieve the effect of improving speed and accuracy, multiplicity and efficiency, improving accuracy and recall rate
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Embodiment 1
[0029] The implementation of the image retrieval method based on the weight color-sift feature dictionary of the present invention refers to figure 1 , give the following specific examples:
[0030] Step 1: Randomly select one image for each type of image in the image database to be retrieved to form the training image database. This example uses the Corel-1000 image database, and it is necessary to retrieve the same type of image in the Corel-1000 image database. The image database includes There are 10 categories of images, and each category includes 100 images. In this example, the value of l is 10, a total of 10 categories, and a total of 100 training images are selected.
[0031] Step 2: Randomly select a training image in the training image database for grayscale transformation, process it through a direction-tunable filter, select a two-dimensional Gaussian function as the filter kernel function, and select an appropriate filter sliding window size to obtain each The e...
Embodiment 2
[0046] Embodiment 2 The image retrieval method based on the weight color-sift feature dictionary is the same as that in Embodiment 1
[0047] This example also selects the Corel-1000 image database. The image database includes 10 categories of images, and each category includes 100 images. The same retrieval process as in Embodiment 1 is performed for each image in the database, and the number of retrieved images n is calculated when returning For the average retrieval accuracy rate of each of the 10 categories at 20 o'clock and the average retrieval accuracy rate of 1000 images in all 10 categories, the retrieval results are counted and tabulated, and compared with several well-known retrieval methods in the prior art in the art For example, the method proposed by Jhanwar and Hung was compared with the method based on color-texture-shape, the method based on SIFT-BOF and the method based on SIFT-SPM. The comparison results are shown in Table 1. As can be seen from Table 1, th...
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