2-D DFT of two dimensional finite extent sequences.

2-D DFT and Convolution
The DFT can be computed with a fast algorithm and it is sometimes beneficial to do the convolution of two sequences A (M1 £ N1) and B (M2 £ N2) via point DFTs. Speed improvements are only possible if both sequences have large dimensions. Otherwise convolutions are better implemented via the convolution sum.

2-D Low-Pass Filtering of Images We will be intere ....etc

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plz.. send me the image encryption using logistic map matlab code on this email...
[email protected]
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Abstract—This paper introduces the Spidergon-Donut (SD) on-chip interconnection network for interconnecting 1,000 cores in future MPSoCs and CMPs. Unlike the Spidergon network, the SD network which extends the Spidergon network into the second dimension, significantly reduces the network diameter, well below the popular 2D Mesh and Torus networks for one extra node degree and roughly 25 percent more links. A detailed construction of the SD network and a method to reshuffle the SD network's nodes for layout onto the 2D plane, and simple one-to ....etc

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A FAST PIPELINED IMPLEMENTATION OF TWO DIMENSIONAL INVERSE DISCRETE COSINE TRANSFORMS

Abstract:- The inverse discrete cosine transform (IDCT) is a significant component in todayâ„¢s JPEG and MPEG decoders. Of all the stages in the decoding process of a JPEG file, the IDCT is the most computationally intensive. Hence, we require fast and efficient implementations, either in software or hardware. Numerous individual designs for computing the ID-IDCT have been proposed. Our 2D-IDCT incorporates two of our ID-IDCT cores and a transpose netwo ....etc

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Hi am najoua i would like to get details on chaos based image encryption matlab code ..My friend Justin said chaos based image encryption matlab code will be available here and now i am living at and i last studied in the college and now am doing i need help on chaos encryption. ....etc

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i m doing dissertation in cryptography based digital image watermarking for gray scale image...so i need matlab source code for encryption and decryption for gray scale image ....etc

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Hi
Kindly help me out with the matlab code for image encryption using catmap technique.
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INTRODUCTION
Image Reconstruction
As name implies it is the process of reconstructing the three dimensional
shape of a single frame image.
principle
The principle of 3D-reconstruction is that, the object's three dimensions
are acquired by the conversion from the shade of gray to the depth of the
information of the image.


The basic design concept
The object surface shadeof gray can be expressed as
E(x,y) = I(x,y)cos
Where
I(x,y) = Light intensity of the optical source.
 = Object surface re
ecti ....etc

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I want to know how people extract edge map from face images ....etc

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This article is presented by:
K. R. RAMAKRISHNAN
N. SRINIWASA

ABSTRACT

New technique for two-dimensional (2-D) spectral estimation of a stationary random field (SRF) is investigated in this paper. This is based on the extension of the Radon transform theory to stationary random fields (SRF’s), proposed by Jain and Ansari . Using the Radon transform, the 2-D estimation problem is reduced to a set of onedimensional (1-D) independent problems, which could then be solved using 1-D linear prediction (LP) or by any other high ....etc

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