A new image enhancement algorithm based on Retinex theory is proposed to solve the problem of bad visual effect of an image in low-light conditions. First, an image is converted from the RGB color space to the HSV col...A new image enhancement algorithm based on Retinex theory is proposed to solve the problem of bad visual effect of an image in low-light conditions. First, an image is converted from the RGB color space to the HSV color space to get the V channel. Next, the illuminations are respectively estimated by the guided filtering and the variational framework on the V channel and combined into a new illumination by average gradient. The new reflectance is calculated using V channel and the new illumination. Then a new V channel obtained by multiplying the new illumination and reflectance is processed with contrast limited adaptive histogram equalization(CLAHE). Finally, the new image in HSV space is converted back to RGB space to obtain the enhanced image. Experimental results show that the proposed method has better subjective quality and objective quality than existing methods.展开更多
By establishing the corresponding variational framework, and using the critical points theorem, we give the existence of multiple solutions for a fractional difference boundary value problem with p-Laplacian operator....By establishing the corresponding variational framework, and using the critical points theorem, we give the existence of multiple solutions for a fractional difference boundary value problem with p-Laplacian operator. Under some suitable assumptions we obtain the existence of a positive parameter such that the problem admits at least three solutions. Some examples are presented to illustrate the main results.展开更多
Erratum to Nano Research Energy,2025,DOI:10.26599/NRE.2025.9120205 https://doi.org/10.26599/NRE.2025.9120205 In the article,the Acknowledgements part in the maintext of this article was unfortunately mispresented due ...Erratum to Nano Research Energy,2025,DOI:10.26599/NRE.2025.9120205 https://doi.org/10.26599/NRE.2025.9120205 In the article,the Acknowledgements part in the maintext of this article was unfortunately mispresented due to the publisher’s negligence.Instead of Acknowledgements This work was financially supported by the National Key Research and Development Program of China(2022YFA1505700),the National Natural Science Foundation of China(52102216),the Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power,the Key Laboratory of Applied Surface and Colloid Chemistry(Shaanxi Normal University),Ministry of Education(2025067).展开更多
By establishing the corresponding variational framework, and using critical point theory, we give the existence of multiple solutions to a fractional difference boundary value problem with parameter. Under some suitab...By establishing the corresponding variational framework, and using critical point theory, we give the existence of multiple solutions to a fractional difference boundary value problem with parameter. Under some suitable assumptions we obtain some results which ensure the existence of well precise interval of parameter for which the problem admits multiple solutions.展开更多
基金supported by the China Scholarship CouncilPostgraduate Research&Practice Innovation Program of Jiangsu Province(No.KYCX17_0776)the Natural Science Foundation of NUPT(No.NY214039)
文摘A new image enhancement algorithm based on Retinex theory is proposed to solve the problem of bad visual effect of an image in low-light conditions. First, an image is converted from the RGB color space to the HSV color space to get the V channel. Next, the illuminations are respectively estimated by the guided filtering and the variational framework on the V channel and combined into a new illumination by average gradient. The new reflectance is calculated using V channel and the new illumination. Then a new V channel obtained by multiplying the new illumination and reflectance is processed with contrast limited adaptive histogram equalization(CLAHE). Finally, the new image in HSV space is converted back to RGB space to obtain the enhanced image. Experimental results show that the proposed method has better subjective quality and objective quality than existing methods.
基金Supported by the National Natural Science Foundation of China(Grant No.11161049)
文摘By establishing the corresponding variational framework, and using the critical points theorem, we give the existence of multiple solutions for a fractional difference boundary value problem with p-Laplacian operator. Under some suitable assumptions we obtain the existence of a positive parameter such that the problem admits at least three solutions. Some examples are presented to illustrate the main results.
文摘Erratum to Nano Research Energy,2025,DOI:10.26599/NRE.2025.9120205 https://doi.org/10.26599/NRE.2025.9120205 In the article,the Acknowledgements part in the maintext of this article was unfortunately mispresented due to the publisher’s negligence.Instead of Acknowledgements This work was financially supported by the National Key Research and Development Program of China(2022YFA1505700),the National Natural Science Foundation of China(52102216),the Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power,the Key Laboratory of Applied Surface and Colloid Chemistry(Shaanxi Normal University),Ministry of Education(2025067).
基金supported by the National Natural Science Foundation of China(11161049)
文摘By establishing the corresponding variational framework, and using critical point theory, we give the existence of multiple solutions to a fractional difference boundary value problem with parameter. Under some suitable assumptions we obtain some results which ensure the existence of well precise interval of parameter for which the problem admits multiple solutions.
