Kuo‐Liang Chung, Wei-Jen Yang, Chyouhwa Chen, Hong-Yuan Mark Liao, Sheng-Mao Zeng,
... selection strategy is proposed to determine the two subsampling chroma components, U and V, according to the DTDI ...
Tópico(s): Advanced Image Processing Techniques
2011 - SPIE | Journal of Electronic Imaging
Wei-Jen Yang, Kuo‐Liang Chung, Weining Yang, Le-Chung Lin,
In this paper, we propose a universal chroma subsampling strategy for compressing mosaic video sequences with arbitrary red-green-blue (RGB) color filter arrays (CFAs), which are widely used in the single ... of our knowledge, this is the first universal chroma subsampling strategy designed specifically for mosaic video sequences with ... the RGB-CFAs demonstrate that the proposed universal chroma subsampling strategy is superior to the conventional strategy of ... integrating the proposed universal demosaicing scheme and the chroma subsampling strategy can deliver better video sequence quality.
Tópico(s): Advanced Vision and Imaging
2012 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Circuits and Systems for Video Technology
Kuo‐Liang Chung, Chi-Chao Huang, Tsu-Chun Hsu,
In this paper, we propose a novel adaptive chroma subsampling-binding and luma-guided (ASBLG) chroma reconstruction method ... voting strategy is proposed to identify the used chroma subsampling scheme prior to compression. Then, the decoded luma ... CSBILINEAR and CSBICUBIC denote the luma-aware based chroma subsampling schemes by Wang et al.
Tópico(s): Image and Video Quality Assessment
2017 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Image Processing
Kuo‐Liang Chung, Yan-Cheng Liang, Ching-Sheng Wang,
... voting (NRWV) strategy is proposed to identify the chroma subsampling scheme used on the server side prior to ... reconstructed results, one from our modified NRWV-based chroma subsampling-binding and luma-guided chroma reconstruction scheme, which ... continuous-tone textures. Further, based on the identified chroma subsampling scheme, a geometry alignment-based error compensation approach is proposed to enhance the reconstructed chroma image. Based on typical test SCIs and JCT- ...
Tópico(s): Image Enhancement Techniques
2018 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Image Processing
Kuo‐Liang Chung, Yu-Ling Lee, Wei-Che Chien,
... paper, we propose an effective gradient descent-based chroma subsampling (GDCS) method for Bayer CFA images. Based on ... the reconstructed images when compared with the existing chroma subsampling methods.
Tópico(s): Image Enhancement Techniques
2018 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Circuits and Systems for Video Technology
Kuo‐Liang Chung, Tsu-Chun Hsu, Chi-Chao Huang,
... and effective hybrid method, which joins the conventional chroma subsampling and the distortion-minimization-based luma modification together, ... the reconstructed RGB images when compared with existing chroma subsampling schemes.
Tópico(s): Image and Signal Denoising Methods
2017 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Image Processing
Chien-Hsiung Lin, Kuo‐Liang Chung, Chun Yu,
... paper, based on mathematical optimization technique, a novel chroma subsampling strategy is presented for compressing mosaic videos with ... consideration. The experimental results demonstrate that the proposed chroma subsampling strategy has the best quality and bitrate tradeoff ...
Tópico(s): Image and Signal Denoising Methods
2015 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Circuits and Systems for Video Technology
Hu Chen, Mingzhe Sun, Eckehard Steinbach,
... novelty of our work lies largely in the chroma subsampling. We properly choose the locations to calculate the chroma pixels U and V according to the positions ...
Tópico(s): Image Processing Techniques and Applications
2009 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Circuits and Systems for Video Technology
Kuo‐Liang Chung, Jen-Shun Cheng, Hong-Bin Yang,
Differing from the traditional chroma subsampling on the YUV image converted from a RGB full-color image, in this paper, we propose a novel and effective chroma subsampling and luma modification (CSLM) method.For each 2 × 2 YUV block, first, a newly reconstructed 2 × 2 RGB full-color ...
Tópico(s): Image and Video Quality Assessment
2020 - Institute of Electrical and Electronics Engineers | IEEE Access
Chroma subsampling is a lossy process often compounded by concatenation of dissimilar techniques. This paper surveys common subsampling applications providing examples of the advantages and disadvantages of various approaches. It also outlines a novel chroma upsampling technique that minimizes erroneous out-of-gamut ...
Tópico(s): Color Science and Applications
2008 - | SMPTE Motion Imaging Journal
Kuo‐Liang Chung, Tsz-Ching Leung, Tzu-Yi Liu, Ya-Chi Tseng,
... consumer markets. In the demosaicking-first compression scheme, chroma subsampling is necessary prior to compressing $I^{RGB}$ and $I^{RGBW}$ . Several linear interpolation-based chroma subsampling methods have been developed for $I^{Bayer}$ , but no nonlinear interpolation-based chroma subsampling methods have targeted the above two CFA image ... Bayer and RGBW CFA images compared with existing chroma subsampling methods.
Tópico(s): Image Enhancement Techniques
2022 - Institute of Electrical and Electronics Engineers | IEEE Access
Ting-Lan Lin, Bang-Hao Liu, Kun-Hu Jiang,
The classical chroma subsampling involves downsampling chrominance components (U and V) while maintaining the luminance component (Y). Recently, a study has attempted to change Y for the chroma-subsampling process, and improved results in the reconstructed image quality are obtained. However, computational complexity remains an issue because ...
Tópico(s): Advanced Vision and Imaging
2020 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Circuits and Systems for Video Technology
Miroslav Uhrina, Juraj Bienik, Tomas Mizdos,
This paper deals with the influence of chroma subsampling on perceived video quality measured by subjective metrics.The evaluation was done for two most used video codecs H.264/AVC and H. ...
Tópico(s): Advanced Image Processing Techniques
2017 - VSB – Technical University of Ostrava | Advances in Electrical and Electronic Engineering
Thijs Vermeir, Jürgen Slowack, Ronny Van Belle, Sebastiaan Van Leuven, Glenn Van Wallendael, Jan De Cock, Rik Van de Walle,
... sharing, supervisory control and data acquisition applications, etc.), chroma subsampling can produce specific artifacts that are disturbing in ... component based on the luma component and the subsampling filter that is used at the encoder device. A 1.63-dB peak signal-to-noise ratio-chroma improvement and 0.051 structural similarity-chroma improvement ...
Tópico(s): Advanced Vision and Imaging
2015 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Circuits and Systems for Video Technology
Ijaz Ahmad, Wooyeol Choi, Seokjoo Shin,
... such as the choice of colorspace, image representation, chroma subsampling, quantization tables, and block size. Our analyses have ... in the JPEG compression performance with and without chroma subsampling, respectively. Additionally, their encryption quality is quantified in ...
Tópico(s): Advanced Image and Video Retrieval Techniques
2023 - Multidisciplinary Digital Publishing Institute | Sensors
Kuo‐Liang Chung, Chih-Yuan Huang, Chen-Wei Kao,
... for each converted 2×2 CbCr block BCbCr, chroma subsampling only downsamples BCbCr, but without changing the luma ... special linear interpolation-based, namely the COPY-based, chroma subsampling-first luma modification (CSFLM) study has attempted to ...
Tópico(s): Image Enhancement Techniques
2021 - Institute of Electrical and Electronics Engineers | IEEE Access
Tópico(s): Image Enhancement Techniques
2022 - Springer Science+Business Media | Multimedia Tools and Applications
Caren Babu, D. Abraham Chandy, P. Karthigaikumar,
Tópico(s): Advanced Data Compression Techniques
2019 - Springer Science+Business Media | Neural Computing and Applications
Bin Li, Tian-Tsong Ng, Xiaolong Li, Shunquan Tan, Jiwu Huang,
... method is robust to small image size and chroma subsampling. The proposed algorithm can be applied in some ...
Tópico(s): Image Processing Techniques and Applications
2015 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Information Forensics and Security
Charles Poynton, Jeroen Stessen, Rutger Nijland,
... come from other changes. ▪C B C R (chroma) subsampling performs worse in combination with the HDR OECF; ...
Tópico(s): Image and Video Quality Assessment
2015 - | SMPTE Motion Imaging Journal
Christophe Lucarz, Marco Mattavelli, Joseph Thomas-Kerr, Jörn W. Janneck,
... and then extending the format by adding new chroma-subsampling patterns.
Tópico(s): VLSI and FPGA Design Techniques
2007 - Institute of Electrical and Electronics Engineers | SiPS ... design and implementation - IEEE Workshop on Signal Processing Systems
Joseph Thomas-Kerr, Jörn W. Janneck, Marco Mattavelli, Lee Burnett, Christian Ritz,
... codecs, for example adding error resilience or new chroma-subsampling profiles, or to build entirely new codecs. This ...
Tópico(s): Advanced Data Storage Technologies
2007 - Institute of Electrical and Electronics Engineers | SiPS ... design and implementation - IEEE Workshop on Signal Processing Systems
Honggang Chen, Xiaohai He, Cheolhong An, Truong Q. Nguyen,
... while color bleeding is mainly caused by the subsampling and quantization of chroma components. Restoring luma can reduce blocking distortion, but ... severe distortion than the luma component due to subsampling and coarse quantization. Thus, we use the luma component to guide the restoration of chroma components. Moreover, we reduce blocking and color bleeding ...
Tópico(s): Image Enhancement Techniques
2018 - Institute of Electrical and Electronics Engineers | IEEE Signal Processing Letters
T.‐L. Lin, Pei-Sin Liaw, Shilin Chen, Chih‐Hsien Hsia, Shih‐Chun Lin,
The optimal strategy of chroma 422 subsampling for Bayer pattern in H.264 video coding is proposed. The state-of-the-art work uses a predetermined conversion ...
Tópico(s): Image and Signal Denoising Methods
2016 - Institution of Engineering and Technology | Electronics Letters
Yung‐Hsiang Chiu, Kuo‐Liang Chung, Chien-Hsiung Lin,
... color deviations due to the U and V chroma subsampling, which results in the quality degradation of the ...
Tópico(s): Image and Signal Denoising Methods
2014 - Elsevier BV | Journal of Visual Communication and Image Representation
Zeina Sinno, Anush K. Moorthy, Jan De Cock, Zhi Li, Alan C. Bovik,
... we studied the effects of compression, scaling and chroma-subsampling on perceived quality by conducting a subjective study. ...
Tópico(s): Color Science and Applications
2019 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Image Processing
Caren Babu, D. Abraham Chandy, Hepzibah A. Christinal,
... aims to bring significant improvement in pre-processing, chroma subsampling and encoding stages of image compression. Among various ... is analyzed in terms of statistical measures. New chroma subsampling patterns are tested, which has shown improved data ...
Tópico(s): Algorithms and Data Compression
2021 - Elsevier BV | Biomedical Signal Processing and Control
Byeongkeun Kang, Subarna Tripathi, Truong Q. Nguyen,
... generator consists of the proposed locally connected layers, chroma subsampling layers, quantization layers, residual blocks, and convolution layers. ...
Tópico(s): Digital Media Forensic Detection
2020 - Institute of Electrical and Electronics Engineers | IEEE Access
Tópico(s): Advanced Steganography and Watermarking Techniques
2024 - THE KOREAN INSTITUTE OF COMMUNICATIONS AND INFORMATION SCIENCES (KICS) | The Journal of Korean Institute of Communications and Information Sciences
Taoran Lu, Fangjun Pu, Yin Peng, Tao Chen, Walt Husak,
... function and non-constant luminance 4:2:0 chroma subsampling. For HDR and WCG content, it is desirable ...
Tópico(s): Video Coding and Compression Technologies
2015 - SPIE | Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE