Results 121 to 130 of about 306 (168)

Pan-sharpening based on Non-subsampled Contourlet Transform detail extraction

2013 Fourth National Conference on Computer Vision, Pattern Recognition, Image Processing and Graphics (NCVPRIPG), 2013
In this paper, we propose a new pan-sharpening method using Non-subsampled Contourlet Transform. The panchromatic (Pan) and multi-spectral (MS) images provided by many satellites have high spatial and high spectral resolutions, respectively. The pan-sharpened image which has high spatial and spectral resolutions is obtained by using these images. Since
Kishor P. Upla, Prakash P. Gajjar, Manjunath V. Joshi   +2 more
openaire   +1 more source

Combined Contourlet and Non-subsampled Contourlet Transforms Based Approach for Personal Identification Using Palmprint

2009 Digital Image Computing: Techniques and Applications, 2009
Palmprint based personal verification is an accepted biometric modality due to its reliability, ease of acquisition and user acceptance. This paper presents a novel palmprint based identification approach which draw on the textural information available on the palmprint by utilizing a combination of Contourlet and Non Subsampled Contourlet Transforms ...
Hassan Masood, Mohammad Asim, Mustafa Mumtaz, Atif Bin Mansoor   +3 more
openaire   +1 more source

Medical Image Fusion via Non-Subsampled Contourlet Transform

International Journal of Multimedia and Ubiquitous Engineering, 2016
Due to the obvious advantages, the technology of medical imaging has been widely utilized in the medical areas. Commonly, the medical images of different imaging mechanism are able to guide the radiologist for the precise diagnosis of disease and for more effective interventional treatment procedures.
Niu Ling, Qi Yingchun
openaire   +1 more source

Multi-focus image fusion based on the non-subsampled contourlet transform

Journal of Modern Optics, 2012
In this paper, a new image fusion algorithm based on non-subsampled contourlet transform (NSCT) is proposed for the fusion of multi-focus images. The selection of different subband coefficients obtained by the NSCT decomposition is critical to image fusion.
Zhongli Zhou, Minghui Wang, Jianhua Adu   +2 more
exaly   +2 more sources

Blind watermarking scheme based on Schur decomposition and non-subsampled contourlet transform

Multimedia Tools and Applications, 2020
An invisibility and blind watermarking algorithm based on Schur decomposition and non-subsampled contourlet transform is designed to protect copyright. The cover image is decomposed by the non-subsampled contourlet transform. And the low pass sub-band of the non-subsampled contourlet transform is divided into 8 × 8 non-overlapping blocks.
Jing-You Li, Chaozhu Zhang
exaly   +2 more sources

A robust watermarking scheme based on Non-Subsampled Contourlet Transform

2010 8th World Congress on Intelligent Control and Automation, 2010
In this paper, a robust blind watermarking scheme is proposed based on Non-Subsampled Contourlet Transform (NSCT) and Singular Value Decomposition (SVD). NSCT keeps the scale of the original image and has better performance than other wavelets in image denoising and enhancement applications.
null Changbing Chen, null Ju Liu, null Jiande Sun, null Zhenfeng Ren, null Huibo Hu   +4 more
openaire   +1 more source

Multimodal Medical Image Fusion in Non-Subsampled Contourlet Transform Domain

Circuits and Systems, 2016
Multimodal medical image fusion is a powerful tool for diagnosing diseases in medical field. The main objective is to capture the relevant information from input images into a single output image, which plays an important role in clinical applications.
Periyavattam Shanmugam Gomathi, Bhuvanesh Kalaavathi   +1 more
exaly   +3 more sources

Digital Images Clarity Quality Evaluation Using Non-subsampled Contourlet Transform

2009 Second International Symposium on Computational Intelligence and Design, 2009
Nowadays, more and more digital images are used in industrial design field. The tools for digital images quality evaluation are needed to select good images. In this paper, we propose one clarity quality metric using the non-subsampled contourlet transform.
Yi Li, Guanzhong Liu
openaire   +1 more source

Medical Image Fusion in Compressed Sensing Based on Non-subsampled Contourlet Transform

2013 IEEE 9th International Conference on Mobile Ad-hoc and Sensor Networks, 2013
In order to get better results and faster speed on medical image fusion, a method based on non-sub sampled contour let transform in compressed sensing was proposed. Because of the large sparsity and sharp contrast between the black and the white of medical images, the energy and average gradient were utilized to design the fusion rules to fuse the low ...
Xiaoxue Xing, Fu Liu 0001, Weiwei Shang 0002, Yanmin Lei, Shujiao Ji   +4 more
openaire   +1 more source

A Line Objects Recognition Algorithm based on Non-subsampled Contourlet Transform

2020 39th Chinese Control Conference (CCC), 2020
Aiming at the recognition of line features represented by bridges and airport runways in remote sensing data, this paper presents a line objects extraction algorithm based on Non-subsampled Contourlet Transform(NSCT). Firstly, NSCT is used to decompose the source image into multiple layers and directions to obtain the corresponding frequency sub-bands.
Qinghua Jiang, Yi Yang, Meng Zhang, Sixian Zhang   +3 more
openaire   +1 more source