RGB-NIR Demosaicking Using a Two-Phase Primal-Dual Algorithm with a Laplacian Guided Image Filter Prior

2021 ◽  
Author(s):  
Wei-Yi Duh ◽  
Yi-Hsien Lin ◽  
Yi-Chang Lu
Keyword(s):  
Dual Algorithm ◽  
Two Phase ◽  
Image Filter ◽  
Guided Image Filter ◽  
Primal Dual

Total Variation Based Parameter-Free Model for Impulse Noise Removal

2017 ◽  
Vol 10 (1) ◽  
pp. 186-204 ◽  
Author(s):  
Federica Sciacchitano ◽  
Yiqiu Dong ◽  
Martin S. Andersen
Keyword(s):  
Total Variation ◽  
Impulse Noise ◽  
Regularization Parameter ◽  
Noise Removal ◽  
Phase Method ◽  
Second Phase ◽  
Dual Algorithm ◽  
Two Phase ◽  
Total Variation Minimization ◽  
Primal Dual

AbstractWe propose a new two-phase method for reconstruction of blurred images corrupted by impulse noise. In the first phase, we use a noise detector to identify the pixels that are contaminated by noise, and then, in the second phase, we reconstruct the noisy pixels by solving an equality constrained total variation minimization problem that preserves the exact values of the noise-free pixels. For images that are only corrupted by impulse noise (i.e., not blurred) we apply the semismooth Newton's method to a reduced problem, and if the images are also blurred, we solve the equality constrained reconstruction problem using a first-order primal-dual algorithm. The proposed model improves the computational efficiency (in the denoising case) and has the advantage of being regularization parameter-free. Our numerical results suggest that the method is competitive in terms of its restoration capabilities with respect to the other two-phase methods.

Single image fog and haze removal based on self-adaptive guided image filter and color channel information of sky region

2017 ◽  
Vol 77 (11) ◽  
pp. 13513-13530 ◽  
Author(s):  
Bo Jiang ◽  
Hongqi Meng ◽  
Jian Zhao ◽  
Xiaolei Ma ◽  
Siyu Jiang ◽  
...  
Keyword(s):  
Single Image ◽  
Color Channel ◽  
Image Filter ◽  
Haze Removal ◽  
Guided Image Filter ◽  
Channel Information ◽  
Self Adaptive

Nighttime image Dehazing with modified models of color transfer and guided image filter

2017 ◽  
Vol 77 (3) ◽  
pp. 3125-3141 ◽  
Author(s):  
Bo Jiang ◽  
Hongqi Meng ◽  
Xiaolei Ma ◽  
Lin Wang ◽  
Yan Zhou ◽  
...  
Keyword(s):  
Color Transfer ◽  
Image Dehazing ◽  
Image Filter ◽  
Guided Image Filter ◽  
Nighttime Image

Efficient disparity estimation from stereo images using hybrid-guided image filter

2017 ◽  
Vol 66 (3) ◽  
pp. 139-151
Author(s):  
Khushboo Jain ◽  
Husanbir Singh Pannu ◽  
Kuldeep Singh ◽  
Avleen Malhi
Keyword(s):  
Disparity Estimation ◽  
Stereo Images ◽  
Image Filter ◽  
Guided Image Filter

Study of a primal-dual algorithm for equality constrained minimization

2014 ◽  
Vol 59 (3) ◽  
pp. 405-433 ◽  
Author(s):  
Paul Armand ◽  
Joël Benoist ◽  
Riadh Omheni ◽  
Vincent Pateloup
Keyword(s):  
Constrained Minimization ◽  
Dual Algorithm ◽  
Primal Dual
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