Research Article
Key-Frame Extraction Based on HSV Histogram and Adaptive Clustering
Algorithm 3
DPCA clustering algorithm for key-frame extraction.
(1) | Initialization: convert each video frame into a one-dimensional vector by HSV histogram | (2) | Optimal cluster number: calculate the maximum SC index for the value of k | (3) | Calculate the distance between any two points and sort them in ascending order | (4) | Take the value at tā=ā2% of the incremental sequence as the cutoff distance dc | (5) | Calculate the and for each frame and generate the decision graph | (6) | Combining the decision graph to select the k cluster centers in descending order of |
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