CS (compressed sensing) distributed type based video coding transmission method in WMSN (wireless multimedia sensor network)

2015 
The invention provides a CS (compressed sensing) distributed type based video coding transmission method in a WMSN (wireless multimedia sensor network). The method includes: performing self-adaptive GOP (group of pictures) selection and self-adaptive sampling rate selection under different channel BER (basic encoding rules) environments; on the basis of perceptual coding compression, realizing data size compression through difference frame coding; performing threshold judgment on points of a difference frame, performing zero setting on pixel points within the threshold, and retaining points outside the threshold. Compared with an existing transmission strategy algorithm, the video coding transmission method has the advantages that utilization of the channel bandwidth is better, reconstruction quality in video reconstruction is higher, and peak signal to noise ratio (PSNR) of a restored image is higher than that with the original algorithm. Meanwhile, the transmission strategy is smaller in occupation of the transmission bandwidth as compared with the existing algorithm.
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