DCT coefficients
EMBEDDING INFORMATION IN DCT COEFFICIENTS BASED ON AVERAGE COVARIANCE
... wavelet coefficients of the cover ...marking, DCT coefficients flipping and cryptography are ...with DCT techniques are applied sequentially on the cover image Huffman encoding dictionary ...
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Face Recognition Algorithm based on Doubly Truncated Gaussian Mixture Model using DCT Coefficients
... 2D DCT coefficients as the feature vector of the each individual face is modelled by k component mixture of doubly truncated multivariate Gaussian ...
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BIT LENGTH REPLACEMENT STEGANOGRAPHY BASED ON DCT COEFFICIENTS
... The steganography is used in the covert communication to transport secrete information. In this paper Bit Length Replacement Steganography using Segmentation and DCT is proposed. The cover image is segmented into ...
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Improving the Image Quality by Using the DCT Coefficients M Vanitha & K Venkataramana
... the DCT coefficients according to the contrast easure ...zero-valued DCT coefficients (after quanti- zation), the algorithm expense is relatively low; and 3) the proposed image enhancement ...
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Hybrid Modeling of Intra-DCT Coefficients for Real-Time Video Encoding
... XVID encoder and the proposed model, respectively. From Figure 5, it is shown that the proposed hybrid model achieves the best real-time performance compared to the reference and the original codec. This validates that ...
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Enhancement of Color Images by Scaling the DCT Coefficients and Interpolation
... Also in this mrthod a comparison is done by using the image quality index .By analyzing using the image quality index, the interpolated image shows better Q value compaired with the enha[r] ...
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Age and Gender Determination from Finger Prints using RVA and dct Coefficients
... A novel method of gender Classification from fingerprint is proposed based on discrete wavelet transform (DWT) and singular value decomposition (SVD).. The classific[r] ...
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An Approach towards Designing a Robust DCT based Image Watermarking Framework against JPEG Compression
... a DCT based image watermarking framework is proposed to enhance the robustness of the watermark in the watermarked image against high level lossy JPEG ...the DCT coefficients of host ...and ...
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Inverse polynomial reconstruction method in DCT domain
... using DCT-based IPRM and the easy path algorithm works in the follow- ing ...the DCT expansion of f ...Fourier coefficients are found either from the time domain signal itself or through a ...
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Data Hiding in AVI Video Files using Multivariate Regression and Flexible Macro block Ordering Siva Kumar L, Singara Srikanth, Nathiya Devi P
... prediction of DCT coefficients and coding parameters of a macroblock is confined to past macroblocks inside the same cut. This gimmick is imperative to smother lapse engendering inside a picture because of ...
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Efficient Analysis And Secure Client Side Image Using Fingerprint Embedding
... signature. The image received for authentication is hashed and the resulting digest is compared to the decrypted signature. If it matches then the received image is authenticated. It is based on the observation that ...
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GRAM-SCHMIDT ORTHOGONALIZATION BASED FACE RECOGNITION USING DWT
... wavelet coefficients are compared for each of the ...using DCT coefficients rescaling for illumination normalization, which uses the correlation of DCT low frequency coefficients to ...
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Dual watermarking for video using discrete cosine transform
... low-frequency DCT coefficients which are easily corrupted by any ...frequency DCT coefficients of the image. So these two DCT coefficients are easily corrupted by any ...all ...
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A Robust Video Watermarking Scheme using DWT and DCT
... by DCT applied on DWT coefficients in high frequency band especially LH and/or HL to provide compression ...The DCT coefficients of colour watermark image are embedded into the ...
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Multifocus and multispectral image fusion based on pixel features using discrete cosine harmonic wavelet transformed and morphological filter
... DCT is a process to modify a signal into elementary frequency ...components. DCT is a closely related to discrete Fourier transform (DFT), using the DCT a signal is categorized into its basic ...
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Transform based approaches for Palmprint Identification
... relevant DCT coefficients from a large number of coefficients which are irrelevant and ...dominant DCT coefficients are selected per image, the feature space per person would have a ...
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Detection and Enhancement of 2d Images
... Abstract: Many saliency detection models of stereoscopic display require multi resolution representation of map data in new models for salient region extraction that is not possible in spectral residual. This provides ...
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A two-stage algorithm for the early detection of zero-quantized discrete cosine transform coefficients in High Efficiency Video Coding
... 8 DCT), which provided a more stringent condition for detecting ...zero-quantized coefficients in an 8 × 8 ...4 DCT and scaling multiplication to avoid division for quanti- zation were studied [3, ...
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Watermarking in H.264/AVC Compressed Domain Using CAVLC
... Abstract—A new real-time watermarking technique based on H.264/AVC video standard is proposed. The algorithm works in the compressed domain by embedding watermark bits into quantized DCT coefficients of 4×4 ...
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Impact on Image Retrieval with Successive Truncation of DCT
... the DCT domain for the JEPG image ...partial DCT coefficients for the feature vector calculation[29] ...dimensional DCT is used for the one dimensional signal processing for example speech ...
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