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updated 5 months ago

To check date Validity by Cavin Dsouza

The program checks whether a date entered in DD/MM/YYYY format is a valid one or not. (date, calendar, leap year)

res=isValidDate(d)

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updated 1 year ago

Simulation of DCT, Walsh, Hadamard, Haar and Slant transform using variable block sizes by Cavin Dsouza

Performs non sinusoidal image transforms on gray-scale images and DCT using the dct matrix. (image processing, image compression)

H=haarmtx(n)

dstmtx(n)

getg(i)

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updated 1 year ago

Basis Images generation of 4*4 order of DCT, DST, Walsh, Hadamard , Haar and Slant by Cavin Dsouza

Generates 4*4 order basis images of sinusoidal and non sinusoidal transforms (image processing)

H=haarmtx(n)

dstmtx(n)

getg(i)

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updated 1 year ago

Denoising using Median Filtering by Cavin Dsouza

Eliminates salt and pepper noise from an image except at the boundary pixels. (image processing)

psnr=get_PSNR(im1,im2)

MedianFiltering_denoising.m

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updated 1 year ago

Image Masking Technique by Cavin Dsouza

It helps in edge detection, Image smoothening depending upon the masking matrices used. (image processing)

psnr=get_PSNR(im1,im2)

Mask_techq.m

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updated 1 year ago

Non-Return-to-Zero (NRZ) line code by Cavin Dsouza

In telecommunication, a non-return-to-zero (NRZ) line code is a binary code. (communications)

Expt1NRZ.m

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updated 1 year ago

Return-to-zero (RZ) line coding by Cavin Dsouza

Rz is a line code used in telecommunications in which the signal drops to zero between each pulse. (communications)

Expt1RZ.m

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updated 1 year ago

Manchester Line Coding by Cavin Dsouza

It is a line code in which the encoding of each data bit has at least one transition. (communications)

Expt1Manchester.m

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updated 1 year ago

Contrast Stretching by Cavin Dsouza

A simple image enhancement technique that attempts to improve the contrast of an Image. (image processing, contrast stretching)

Expt2B_IP.m

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updated 1 year ago

Linear Translation and Rotation of an Image by Cavin Dsouza

The code performs translation on the image and rotation as per user entered specification. (image manipulation, image processing)

Expt1C_IP.m

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updated 1 year ago

Concept of Thresholding by Cavin Dsouza

Using histogram of an image, one can decide a threshold to convert gray-scale image to binary image. (image processing)

Expt2C_IP.m

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updated 1 year ago

Histogram Equalization by Cavin Dsouza

It is the re-distribution of gray level values uniformly. (image processing)

Expt2D_IP.m

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updated 1 year ago

Zooming and Shrinking of an Image by Cavin Dsouza

This code explains how an Image can be resized by u user entered zooming or shrinking factor. (image processing, zooming, shrinking)

Expt1B_IP.m

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updated 1 year ago

Basic arithmetic and logical operations on an Image(Gray-Scale) by Cavin Dsouza

This code illustrates results seen after performing various it and arithmetic operations on Images. (image processing, image enhancement)

Expt1A_IP.m

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updated 1 year ago

POWERMOD by Cavin Dsouza

The function calculates A = powermod(base,exponent,modulus) (powermod, data compression and ..., modulus)

a=powermod(x,z,p)

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updated 1 year ago

Arithmetic Coding and decoding by Cavin Dsouza

Encodes a message using arithmetic coding and decodes it (arithmetic coding, data compression and ..., communications)

Arithmetic_Coding.m

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updated 1 year ago

Compute the Entropy of an entered text string by Cavin Dsouza

Computes the entropy of a user entered string. (entropy, communication)

ComputeEntropy(s)

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updated 1 year ago

Primitive Root by Cavin Dsouza

Checks whether alpha is a primitive root of q or not. (primitive root, discrete logarithm, diffie hellman key ex...)

p=checkPrimitive(q,alpha)

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updated 1 year ago

Chinese Remainder Theorem by Cavin Dsouza

Computes CRT of a system of equations of the form x=r1mod(p1),x=r2mod(p2)........... (data compression and ..., chinese remainder the..., inverse modulo)

phi=eulerphi(n)

x=CRT(r,p)

y=invmodn(x,p)

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