An improved video denoising algorithm based on 3D block matching

作者：Xiao Jinsheng; Jiang Hong; Peng Hong; Li Wenhao; Yue Xianchang^*

来源：Journal of Sichuan University(Engineering Science Edition), 2014, 46(4): 81-86.

• Block Matching
• Computation complexity
• Continuous derivative threshold
• Searching methods
• Threshold methods
• Transform domain
• VBM3D
• Video de-noising

The video block-matching and 3-D filtering (VBM3D) algorithm was improved, which had block effect and low-efficiency. A continuous derivative threshold method was introduced during the shrinkage of the coefficient in transform domain, replacing the hard threshold method. A fast method based on the integral images was used to calculate the distance between image blocks in intra frames matching. An improved searching method of predictive-search block-matching for inter frames matching was presented. The computation was reduced and the efficiency of the algorithm was improved on the premise of finding similar blocks. The experimental results and the theoretical analysis demonstrated that the improved method achieved excellent denoising performance. The result of block effect in the original VBM3D algorithm was improved and the computation complexity of improved algorithm was reduced greatly.

• 出版日期2014
• 单位武汉大学