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1

answer

1 vote
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ERROR :Unable to read MAT-file. Not a binary MAT-file. Try load -ASCII to read as text.

Asked bytupac1971ful on 21 Mar 2018

Latest activity Commented onby演示serghiouon 20 Aug 2022 at 15:53

Physical Modeling Simscape Driveline

0

answers

0 votes
0 views

Human Visual System based watermarking scheme

Asked byVasilije Vujadinovic on 31 May 2022

MATLAB Mathematics Linear Algebra Eigenvalues

1

answer

0 votes
0 views

my DCT2 algorithm results in blank image, please help

Asked byliam xu on 23 May 2022

Latest activity Commented onbyliam xuon 23 May 2022

Image Processing and Computer Vision Image Processing Toolbox Image Filtering and Enhancement Neighborhood and Block Processing

6

answers

0 votes
29 views

Stegnaography using DCT

Asked byPranoy on 29 Jan 2012

Latest activity Commented onbyAjmal Mohammed V Mon 13 May 2022

Accepted AnswerbyWalter Roberson

MATLAB Data Import and Analysis Encryption / Cryptography

0

answers

0 votes
2 views

image steganography in the dct domain

Asked byeng 2015年6月30日

Latest activity Commented onbyAjmal Mohammed V Mon 11 May 2022

MATLAB Data Import and Analysis Encryption / Cryptography

1

answer

0 votes
127 views

2-DCT Image compression

Asked byAmarnath R on 3 Nov 2018

Latest activity Commented onbyIbnsina Faiz Azzion 22 Apr 2022

Image Processing and Computer Vision Image Processing Toolbox Image Segmentation and Analysis Image Transforms

0

answers

0 votes
3 views

Audio Compression with DCT method

Asked byMohammad Azhar on 21 Apr 2022

Latest activity Commented onbyMohammad Azharon 21 Apr 2022

Signal Processing Audio Toolbox Machine Learning and Deep Learning for Audio Feature Extraction

1

answer

2 votes
0 views

Error while using dct on gpu. Matrix dimensions must agree.

Asked byMohamed Gharbi on 7 Mar 2020

Latest activity Commented onbyWalter Roberson on 31 Mar 2022

Parallel Computing Parallel Computing Toolbox GPU Computing

0

answers

0 votes
5 views

Watermarking using DCT: For embedding an image into another image and extracting the same.

Asked byAmanurdeep Ka on 11 Apr 2014

Latest activity Commented onbyDGM on 20 Mar 2022

Image Processing and Computer Vision Image Processing Toolbox Image Filtering and Enhancement Watermarking

1

answer

0 votes
0 views

replace one bit plane with random image in DCT domain and get DCT inverse

Asked bymohammad nemat on 25 Jan 2022

Latest activity Answeredbyyanqi liu on 26 Jan 2022

Accepted Answerbyyanqi liu

Image Processing and Computer Vision Image Processing Toolbox 3-D Volumetric Image Processing

1

answer

0 votes
0 views

Divide an image into many 8 * 8 sub images, each sub image is FFT, and 64 coefficients in each sub image are sorted according to the variance of each coefficient.

Asked byJAHED HASSAN on 29 Dec 2021

Latest activity AnsweredbyImage Analyst on 29 Dec 2021

Image Processing and Computer Vision Image Processing Toolbox Image Filtering and Enhancement

1

answer

0 votes
2 views

I want to find DCT of a gray scale image. How to do it?

Asked byChandvi Arora on 19 Jul 2017

Latest activity Commented onbyDeo Kelvinon 28 Dec 2021

Accepted AnswerbyWalter Roberson

Image Processing and Computer Vision Image Processing Toolbox Image Filtering and Enhancement Neighborhood and Block Processing

0

answers

0 votes
1 view

Denoising function for a sliding DCT filter

Asked byDeepika Sundresh on 15 Dec 2021

Signal Processing Wavelet Toolbox Denoising and Compression

0

answers

0 votes
1 view

How can the proportion of energy in the n largest DCT coefficients be calculated?

Asked byGero Kolhof on 10 Nov 2021

Image Processing and Computer Vision Image Processing Toolbox Image Segmentation and Analysis Image Transforms

0

answers

0 votes
0 views

在MATLAB dct命令是不支持的万博1manbetx

Asked byHorendra Nath Gogoi on 7 Nov 2021

Latest activity Commented onbySteven Lord on 7 Nov 2021

Signal Processing Signal Processing Toolbox Digital and Analog Filters Multirate Signal Processing

2

answers

0 votes
27 views

How to divide gray scale image into 8x8 blocks and access each block separately to apply dct2 on the block

Asked byAri M Salih on 29 Apr 2019

Latest activity EditedbyImage Analyst on 23 Oct 2021

Accepted AnswerbyStephane Dauvillier

Image Processing and Computer Vision Image Processing Toolbox Image Filtering and Enhancement Image Arithmetic

0

answers

0 votes
0 views

How to combine dct and dwt

Asked byNur Fatimah on 30 Aug 2021

Latest activity EditedbySrijith Kasaragod on 2 Sep 2021

Signal Processing Wavelet Toolbox

1

answer

0 votes
28 views

how to do watermarking using dct.

Asked byyashi gautam on 1 Feb 2016

Latest activity Commented onbyRagini Gaikwadon 14 Jun 2021

Accepted AnswerbyWalter Roberson

Signal Processing Signal Processing Toolbox Transforms, Correlation, and Modeling Transforms Discrete Fourier and Cosine Transforms

1

answer

0 votes
3 views

how wa can discard 75% of small coefficients after get the DCT conversion of each image block?

Asked bymohammad nemat on 30 May 2021

Latest activity EditedbyJonas on 31 May 2021

Image Processing and Computer Vision Image Processing Toolbox Image Filtering and Enhancement Neighborhood and Block Processing

1

answer

0 votes
3 views

如何修复error in port widths or dimentions on the reshape block input?

Asked byAlexander Semenov on 16 May 2021

Latest activity AnsweredbyAndy Bartlett on 18 May 2021

Accepted AnswerbyAndy Bartlett

Image Processing and Computer Vision Computer Vision Toolbox Computer Vision With Simulink

1

answer

0 votes
1 view

Getting this error - Index exceeds the number of array elements (0). quant(keymat(Nm(ii-1)+jj))=bitset(quant(keymat(Nm(ii-1)+jj)),1,str2double(tempcipher(ii,jj))); for DCT steganography

Asked byTalha Chafekar on 20 Apr 2021

Latest activity AnsweredbyDivija Aleti on 23 Apr 2021

MATLAB Programming Programming Utilities

1

answer

0 votes
5 views

DCT transformation

Asked byamitesh kumar on 15 Feb 2011

Latest activity AnsweredbyRobert Brown on 18 Apr 2021

Image Processing and Computer Vision Image Processing Toolbox Image Filtering and Enhancement Neighborhood and Block Processing

0

answers

0 votes
4 views

inverse quantization in simulink

Asked byAnil Chowdary Tummala on 4 Feb 2021

Image Processing and Computer Vision Computer Vision Toolbox Computer Vision With Simulink

2

answers

0 votes
19 views

我怎么能将灰度图像转化为一个8×8块and then show the DCT coefficients in each block as an image?

Asked byOsman on 8 Nov 2015

Latest activity AnsweredbyTUMMALA ANIL CHOWDARYon 27 Jan 2021

Image Processing and Computer Vision Image Processing Toolbox Image Filtering and Enhancement Neighborhood and Block Processing

2

answers

0 votes
5 views

how to hide a binary image within an rgb image?

Asked bychaithra on 29 Jan 2014

Latest activity Commented onbyIshara Kariyawasamon 19 Jan 2021

Accepted AnswerbyShivaputra Narke

MATLAB Data Import and Analysis Encryption / Cryptography

1

answer

0 votes
26 views

copy-move image forgery detection using DCT

Asked byHaya Binsalim on 30 Nov 2020

Latest activity AnsweredbyPriysha LNU on 7 Jan 2021

Image Processing and Computer Vision Image Processing Toolbox Image Filtering and Enhancement Image Filtering

1

answer

0 votes
1 view

Matrix dimensions must agree error when using DCT2?

Asked byHarry West on 8 Dec 2020

Latest activity AnsweredbyAbhishek Gupta on 14 Dec 2020

Image Processing and Computer Vision Image Processing Toolbox Image Segmentation and Analysis Image Transforms

1

answer

0 votes
0 views

How do I select and produce a 8x8 pixel region of an original image as a new image?

Asked byClement Chua on 5 Dec 2020

Latest activity AnsweredbyKeerthana Chiruvolu on 8 Dec 2020

Image Processing and Computer Vision Image Processing Toolbox Image Segmentation and Analysis Object Analysis

0

answers

0 votes
2 views

Watermarking in the Frequency Domain

Asked byHadi Ghahremannezhad on 11 Nov 2020

Latest activity Commented onbyHadi Ghahremannezhadon 12 Nov 2020

Image Processing and Computer Vision Image Processing Toolbox Image Filtering and Enhancement Watermarking

1

answer

0 votes
16 views

How can I use the Parallel Computing Toolbox to run multiple Simulink simulations in a parallel or distributed fashion?

Asked byMathWorks Support Team on 10 Sep 2012

Latest activity EditedbyMathWorks Support Team on 5 Nov 2020

Accepted AnswerbyMathWorks Support Team

万博1manbetx Modeling Design Model Behavior Multicore Processor Targets

1

answer

0 votes
0 views

Can I run the MATLAB Parallel Server (R14SP1+) workers on a heterogeneous cluster?

Asked byMathWorks Support Team on 27 Jun 2009

Latest activity EditedbyMathWorks Support Team on 3 Nov 2020

Accepted AnswerbyMathWorks Support Team

Parallel Computing MATLAB Parallel Server Cluster Configuration

1

answer

1 vote
7 views

Audio compression using DCT

Asked byrachel cn on 15 Oct 2020

Latest activity Commented onbyrachel cnon 17 Oct 2020

Accepted AnswerbyWalter Roberson

Signal Processing Signal Processing Toolbox Transforms, Correlation, and Modeling Transforms

1

answer

0 votes
0 views

Cartoon Image compression algorithm using DCT

Asked byLaura Passalacqua on 4 Sep 2020

Latest activity AnsweredbySarvani Panguluri on 7 Sep 2020

Image Processing and Computer Vision Image Processing Toolbox Image Segmentation and Analysis Image Transforms

0

answers

0 votes
3 views

dct function throwing error using identity matrix as its parameter

Asked byJong Sung Park on 16 Aug 2020

Latest activity Commented onbyJohn D'Errico on 16 Aug 2020

MATLAB Language Fundamentals Data Types Data Type Identification Whos

1

answer

0 votes
1 view

DCT in matlab using radians or degree

Asked byDella N on 5 Jul 2020

Latest activity Commented onbyDella Non 15 Jul 2020

Signal Processing Signal Processing Toolbox Transforms, Correlation, and Modeling Transforms

0

answers

0 votes
0 views

Error with dct (version 2020)

Asked byLucas Montes on 7 Jul 2020

Image Processing and Computer Vision Image Processing Toolbox Image Filtering and Enhancement

0

answers

0 votes
0 views

how implement DCT stegnography

Asked byamal on 21 Sep 2014

Latest activity Commented onbyFady Samannon 13 Jun 2020

MATLAB Data Import and Analysis Encryption / Cryptography

0

answers

0 votes
0 views

I have a code to compress an audio file using dct, but iam unable to play the compressed file at the end. Can somebody help me with the code,please.

Asked bySai Nikhil Varada on 29 May 2020

Latest activity Commented onbyGeoff Hayes on 29 May 2020

MATLAB Data Import and Analysis Data Import and Export Standard File Formats Audio and Video

2

answers

0 votes
42 views

How can I take the DCT coefficients in each 8x8 block as an image?

Asked byOsman on 9 Nov 2015

Latest activity AnsweredbyGOKUL REDDYon 25 May 2020

Image Processing and Computer Vision Image Processing Toolbox Image Filtering and Enhancement Neighborhood and Block Processing

1

answer

0 votes
2 views

Is it possible to insert an image into the midband frequencies of DCT?

Asked byRiza P on 1 Apr 2016

Latest activity Answeredbysripradha iyengaron 5 May 2020

Image Processing and Computer Vision Image Processing Toolbox Image Segmentation and Analysis Image Transforms

1

answer

0 votes
0 views

can i apply DCT on binary values or it need conversion to decimal and then apply DCT,is it?

Asked byNishaban P.K. on 21 Apr 2020

Latest activity AnsweredbyPrabhan Purwar on 24 Apr 2020

Signal Processing Signal Processing Toolbox Measurements and Feature Extraction Descriptive Statistics

0

answers

0 votes
4 views

Using specific transform from fftw library

Asked byjassem44 on 14 Jan 2020

Latest activity Commented onbyjassem44on 17 Apr 2020

Image Processing and Computer Vision Image Processing Toolbox Image Segmentation and Analysis Image Transforms

3

answers

0 votes
23 views

I require a code for embedding and extraction of a watermark from an image (DCT Domain). Please help.

Asked byLester on 6 Feb 2013

Latest activity Commented onbyImage Analyst on 26 Mar 2020

Accepted AnswerbyImage Analyst

Image Processing and Computer Vision Image Processing Toolbox Image Filtering and Enhancement Watermarking

1

answer

0 votes
1 view

Error while compressing the image using dct2()

Asked byanuja tidke on 24 Mar 2020

Latest activity AnsweredbySriram Tadavarty on 24 Mar 2020

Accepted AnswerbySriram Tadavarty

Image Processing and Computer Vision Image Processing Toolbox Image Filtering and Enhancement

0

answers

0 votes
2 views

Watermarking of image using DCT

Asked byNamrata Purohit on 21 Mar 2020

Latest activity Commented onbyWalter Roberson on 21 Mar 2020

Image Processing and Computer Vision Image Processing Toolbox Image Filtering and Enhancement Watermarking

2

answers

0 votes
2 views

Reduce the image size while maintaining the quality. Use dct2 with RGB image. when I Concatenate the RGB I get white image

Asked byJuan Quezada on 16 Mar 2020

Latest activity AnsweredbyImage Analyst on 19 Mar 2020

MATLAB Graphics Images

1

answer

0 votes
0 views

Hey, Im trying to run this code but the run time is too long. can anyone help me out here plz

Asked byMahiar Lashgari on 12 Mar 2020

Latest activity EditedbyMohammad Sami on 13 Mar 2020

Accepted AnswerbyMohammad Sami

Signal Processing Signal Processing Toolbox Measurements and Feature Extraction Pulse and Transition Metrics

0

answers

0 votes
2 views

I want to know code for "A robust hybrid watermarking for securing medical images"?

Asked bySubhash Moparthi on 7 Mar 2020

Image Processing and Computer Vision Image Processing Toolbox Image Filtering and Enhancement Watermarking

0

answers

0 votes
0 views

Hi evryone can You help me with this code, i need to seperate this code in order to embed and extract text in and from image by using DCT, thanks in advance

Asked byMohammed alfath Ahmed on 30 Jan 2020

MATLAB Data Import and Analysis Encryption / Cryptography

0

answers

0 votes
1 view

I need a code which hides Image in Image (Image steganography) using DCT technique

Asked byMohammed Atif Jaseem on 15 Jan 2020

Latest activity Commented onbyWalter Roberson on 16 Jan 2020

MATLAB Data Import and Analysis Encryption / Cryptography

Results 1 - 50 of 251