728 citations · 1.1k across the 8 of their papers we have counts for
8 papers
Blockwise SURE Shrinkage for Non-Local Means
Yue Wu, Brian Tracey, Premkumar Natarajan +1
In this letter, we investigate the shrinkage problem for the non-local means (NLM) image denoising. In particular, we derive the closed-form of the optimal blockwise shrinkage for…
Probabilistic Non-Local Means
Yue Wu, Brian Tracey, Premkumar Natarajan +1
In this paper, we propose a so-called probabilistic non-local means (PNLM) method for image denoising. Our main contributions are: 1) we point out defects of the weight function us…
James-Stein Type Center Pixel Weights for Non-Local Means Image Denoising
Yue Wu, Brian Tracey, Joseph P. Noonan
Non-Local Means (NLM) and variants have been proven to be effective and robust in many image denoising tasks. In this letter, we study the parameter selection problem of center pix…
A New Randomness Evaluation Method with Applications to Image Shuffling and Encryption
Yue Wu, Sos Agaian, Joseph P. Noonan
This letter discusses the problem of testing the degree of randomness within an image, particularly for a shuffled or encrypted image. Its key contributions are: 1) a mathematical…
Sudoku Associated Two Dimensional Bijections for Image Scrambling
Yue Wu, Sos S. Agaian, Joseph P. Noonan
Sudoku puzzles are now popular among people in many countries across the world with simple constraints that no repeated digits in each row, each column, or each block. In this pape…
A New Family of Generalized 3D Cat Maps
Yue Wu, Sos Agaian, Joseph P. Noonan
Since the 1990s chaotic cat maps are widely used in data encryption, for their very complicated dynamics within a simple model and desired characteristics related to requirements o…