Results 251 to 260 of about 2,491,696 (297)

Patch-Sparsity-Based Image Inpainting Through a Facet Deduced Directional Derivative

IEEE Transactions on Circuits and Systems for Video Technology, 2019
This paper presents a patch-sparsity-based image inpainting algorithm through a facet deduced directional derivative. The algorithm could ensure the continuity of boundaries of the inpainted region and achieve a better performance on restoring the ...
Xiangzhi Bai, Darui Jin
exaly   +2 more sources

Medical Image Enhancement Method Based on the Fractional Order Derivative and the Directional Derivative

International journal of pattern recognition and artificial intelligence, 2018
In recent years, the fractional order derivative has been introduced for image enhancement. It was proved that the medical image enhancement method based on the fractional order derivative has better effect than the method based on the integral order ...
Jinlan Guan, Jie-Quan Ou, Zhi-Hui Lai, Yuting Lai   +3 more
semanticscholar   +2 more sources

A Hausdorff-type distance, the Clarke generalized directional derivative and applications in set optimization problems

Applicable Analysis, 2020
In this paper, we introduce a Hausdorff-type distance relative to an ordering cone between two sets. We obtain some properties of the Hausdorff-type distance. In particular, we give a characterization of the Hausdorff-type distance.
Yu Han
semanticscholar   +1 more source

The optimal regularity criterion for the Navier‐Stokes equations in terms of one directional derivative of the velocity

ZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik, 2019
We study the regularity criterion for the Navier‐Stokes equations in terms of one directional derivative of the velocity field. Using a suitable multiplicative Sobolev inequality we extend the results by Kukavica & Ziane, Cao and Zhang.
Yuliya V. Namlyeyeva, Zdenek Skalak
semanticscholar   +1 more source

Evaluation of the Directional Derivative Approach for Timely and Accurate Satellite‐Based Emission Estimation Using Chemical Transport Model Simulation of Nitrogen Oxides

Journal of Geophysical Research - Atmospheres
The directional derivative approach (DDA) has the potential to rapidly and accurately quantify emission distributions based on the directional derivative of satellite‐observed column amounts with respect to the horizontal wind. From the first principles,
Z. Ayazpour, Kang Sun, Ruixin Zhang, Hui-Zhong Shen   +3 more
semanticscholar   +1 more source

Noise-robust color edge detection using anisotropic morphological directional derivative matrix

Signal Processing, 2019
In this paper, a color edge detector using the anisotropic morphological directional derivatives (AMDDs) is presented to detect edges in color images corrupted by Gaussian or impulsive noise.
Ou Li, Peng-Lang Shui
semanticscholar   +1 more source

Directional Derivative and Subgradient of Cone-Convex Set-Valued Mappings with Applications in Set Optimization Problems

Journal of the Operations Research Society of China, 2023
Yu Han
semanticscholar   +1 more source

Edge detection using multi-directional anisotropic Gaussian directional derivative

Signal, Image and Video Processing, 2023
Ying An, Jun-Feng Jing, Wei-Chuan Zhang
semanticscholar   +1 more source