Quality grading and perceptual hash characteristic combination-based unmanned aerial vehicle image retrieval method
A quality classification and perceptual hashing technology, applied in the field of image processing, can solve problems such as complex retrieval algorithms, achieve fast and accurate retrieval, good algorithm time performance, and low data dimensionality
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[0075] In this embodiment, the UAV image data set containing 500 images is tested, and the test process and results are as follows:
[0076] The first step is to perform automatic quality classification on the UAV training image set, extract the hash code, and establish a database application;
[0077] First, based on edge information statistics, the UAV image clarity is automatically graded and quality labels are assigned;
[0078] 1) Data preparation, constructing an image dataset with image quality classification;
[0079] The UAV image dataset contains a total of 500 real-shot images of UAVs at an altitude of 4km-5km, including 400 training set images and 100 test set images. According to the application requirements for image retrieval, based on the comparison between the subjective perception of the human eye and the images, the UAV reconnaissance images are divided into four levels 1-4, corresponding to very good definition, good definition, average definition, clear ...
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