Nothing Special   »   [go: up one dir, main page]

Frajka et al., 2004 - Google Patents

Downsampling dependent upsampling of images

Frajka et al., 2004

Document ID
15544724836702219978
Author
Frajka T
Zeger K
Publication year
Publication venue
Signal Processing: Image Communication

External Links

Snippet

Downsampling an image results in the loss of image information that cannot be recovered with upsampling. We demonstrate that the particular combination of downsampling and upsampling methods used can significantly impact the reconstructed image quality, and then …
Continue reading at www.sciencedirect.com (other versions)

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T3/00—Geometric image transformation in the plane of the image, e.g. from bit-mapped to bit-mapped creating a different image
    • G06T3/40—Scaling the whole image or part thereof
    • G06T3/4084—Transform-based scaling, e.g. FFT domain scaling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H04N19/186—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being a colour or a chrominance component
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T3/00—Geometric image transformation in the plane of the image, e.g. from bit-mapped to bit-mapped creating a different image
    • G06T3/40—Scaling the whole image or part thereof
    • G06T3/4015—Demosaicing, e.g. colour filter array [CFA], Bayer pattern
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T3/00—Geometric image transformation in the plane of the image, e.g. from bit-mapped to bit-mapped creating a different image
    • G06T3/40—Scaling the whole image or part thereof
    • G06T3/4007—Interpolation-based scaling, e.g. bilinear interpolation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
    • H04N19/63—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding using sub-band based transform, e.g. wavelets
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration, e.g. from bit-mapped to bit-mapped creating a similar image
    • G06T5/001—Image restoration
    • G06T5/002—Denoising; Smoothing
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T9/00—Image coding, e.g. from bit-mapped to non bit-mapped
    • G06T9/007—Transform coding, e.g. discrete cosine transform
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration, e.g. from bit-mapped to bit-mapped creating a similar image
    • G06T5/20—Image enhancement or restoration, e.g. from bit-mapped to bit-mapped creating a similar image by the use of local operators
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T9/00—Image coding, e.g. from bit-mapped to non bit-mapped
    • G06T9/001—Model-based coding, e.g. wire frame
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/20—Special algorithmic details
    • G06T2207/20172—Image enhancement details
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/20—Special algorithmic details
    • G06T2207/20048—Transform domain processing
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T1/00—General purpose image data processing
    • G06T1/0021—Image watermarking
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2201/00—General purpose image data processing
    • G06T2201/005—Image watermarking

Similar Documents

Publication Publication Date Title
Acharya et al. Computational foundations of image interpolation algorithms.
Wu et al. Low bit-rate image compression via adaptive down-sampling and constrained least squares upconversion
Bhatnagar et al. A new robust reference watermarking scheme based on DWT-SVD
Frajka et al. Downsampling dependent upsampling of images
US20080260285A1 (en) Method and apparatus for image processing
Mhala et al. Contrast enhancement of progressive visual secret sharing (pvss) scheme for gray-scale and color images using super-resolution
Jakhetiya et al. Maximum a posterior and perceptually motivated reconstruction algorithm: A generic framework
Lakshman et al. Image interpolation using shearlet based iterative refinement
Vo et al. Selective data pruning-based compression using high-order edge-directed interpolation
Fang et al. Joint demosaicing and subpixel-based down-sampling for Bayer images: A fast frequency-domain analysis approach
Zhang et al. BE-ACGAN: Photo-realistic residual bit-depth enhancement by advanced conditional GAN
US7630568B2 (en) System and method for low-resolution signal rendering from a hierarchical transform representation
Chen et al. Low bit rates image compression via adaptive block downsampling and super resolution
Singh et al. A secured robust watermarking scheme based on majority voting concept for rightful ownership assertion
Deshlahra Analysis of Image Compression Methods Based On Transform and Fractal Coding
Park et al. Hybrid image upsampling method in the discrete cosine transform domain
US8503543B2 (en) Systems and methods for compression, transmission and decompression of video codecs
Lama et al. Image interpolation for high-resolution display based on the complex dual-tree wavelet transform and hidden Markov model
EP2153403B1 (en) Method and device for down-sampling a dct image in the dct domain
Mukherjee et al. Demosaicing of images obtained from single-chip imaging sensors in YUV color space
Tsai et al. Image up-sampling using discrete wavelet transform
US20150003511A1 (en) WEAV Video Super Compression System
Lama et al. New interpolation method based on combination of discrete cosine transform and wavelet transform
Acharya et al. Iterative spatial domain 2-D signal decomposition for effectual image up-scaling
Singh et al. A comparative performance analysis of DCT-based and Zernike moments-based image up-sampling techniques