Search results for "Bit plane"

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Restoration of Digitized Damaged Photos using Bit-Plane Slicing

2007

Digital image restoration aims to recover damaged zones of a digital image, using surrounding information. In this paper we propose a novel approach, based on bit-plane slicing decomposition, with the purpose to make information analysis and reconstruction process easy, fast and effective. Tests have been made on digitized damaged old photos to restore several classes of typical defects in old photographic prints.

Settore ING-INF/05 - Sistemi Di Elaborazione Delle InformazioniPixelComputer sciencebusiness.industryComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISIONProcess (computing)Image processingIterative reconstructionDigital imageImage restorationComputer graphics (images)Computer visionArtificial intelligenceBit plane slicingbusinessImage restorationBit-plane slicing Digital inpainting Image restoration
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Texture Synthesis for Digital Restoration in the Bit-Plane Representation

2007

In this paper we propose a new approach to handle the problem of restoration of grayscale textured images. The purpose is to recovery missing data of a damaged area. The key point is to decompose an image in its bit-planes, and to process bits rather than pixels. We propose two texture synthesis methods for restoration. The first one is a random generation process, based on the conditional probability of bits in the bit-planes. It is designed for images with stochastic textures. The second one is a best-matching method, running on each bit-plane, that is well suited to synthesize periodic patterns. Results are compared with a state-of-the-art restoration algorithm.

Settore ING-INF/05 - Sistemi Di Elaborazione Delle InformazioniPixelbusiness.industryStochastic processComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISIONFilmsHistoric preservationImage enhancementInternetRestorationTexturesGrayscaleImage textureComputer Science::Computer Vision and Pattern RecognitionComputer visionAlgorithm designArtificial intelligencebusinessImage restorationTexture synthesisMathematicsBit plane2007 Third International IEEE Conference on Signal-Image Technologies and Internet-Based System
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Detection of Duplicated Regions in Tampered Digital Images by Bit-Plane Analysis

2009

In this paper we present a new method for searching duplicated areas in a digital image. The goal is to detect if an image has been tampered by a copy-move process. Our method works within a convenient domain. The image to be analyzed is decomposed in its bit-plane representation. Then, for each bitplane, block of bits are encoded with an ASCII code, and a sequence of strings is analyzed rather than the original bit-plane. The sequence is lexicographically sorted and similar groups of bits are extracted as candidate areas, and passed to the following plane to be processed. Output of the last planes indicates if, and where, the image has been altered.

business.industryComputer scienceBinary imageImage processingImage Forensics Image Analysis Bit-Plane Decomposition Duplication Detection Image ForgeriesPlane (Unicode)Digital imageDigital image processingComputer visionArtificial intelligencebusinessBlock (data storage)Feature detection (computer vision)Bit plane
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