Search results: tag:"dct" - MATLAB Answers

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Results for tag:"dct" (259 results)

Results 1 - 50 of 259

1

answer

0 votes
11 views

Denoising function for a sliding DCT filter

Asked by Deepika Sundresh on 15 Dec 2021

Latest activity Edited by Abhimenyu on 14 Apr 2024 at 23:31

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

1

answer

0 votes
3 views

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

Asked by Gero Kolhof on 10 Nov 2021

Latest activity Edited by Abhinav Aravindan on 5 Mar 2024

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

1

answer

0 votes
1 view

How can I adjust the number of threads for functions based on fftw?

Asked by 현탁 박 on 15 Feb 2024

Latest activity Commented on by Angelo Yeo on 15 Feb 2024

MATLAB Mathematics Fourier Analysis and Filtering

1

answer

0 votes
2 views

How can I record the sound produced after the LPC Algorithm?

Asked by Mert Sari on 22 Jan 2024

Latest activity Answered by Sulaymon Eshkabilov on 22 Jan 2024

Signal Processing Audio Toolbox Simulation, Tuning, and Visualization

2

answers

0 votes
4 views

I want to add PSNR, MSError and SNR to my ready code.

Asked by Mert Sari on 16 Jan 2024

Latest activity Answered by Mert Sari on 17 Jan 2024

Accepted Answer by Mert Sari

Signal Processing Audio Toolbox Audio Processing Algorithm Design

1

answer

0 votes
4 views

I am embedding audio into an DICOM Image using DCT Method .But after extraction am not able to extract the original Audio.

Asked by Ramya on 12 Dec 2023

Latest activity Answered by Aishwarya on 18 Dec 2023

Accepted Answer by Aishwarya

Signal Processing Audio Toolbox

1

answer

0 votes
2 views

I am embedding text file but am getting very low ssim value using dct but am getting good PSNR Value How?

Asked by Ramya on 22 Nov 2023

Latest activity Answered by Ayush on 13 Dec 2023

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

1

answer

1 vote
216 views

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

Asked by tupac1971ful on 21 Mar 2018

Latest activity Commented on by Joohyun Lee on 14 Jul 2023

Physical Modeling Simscape Driveline

1

answer

0 votes
8 views

Can the Parallel Computing Toolbox and the MATLAB Distributed Computing Server take advantage of nondistributed systems such as multi-CPU systems?

Asked by MathWorks Support Team on 16 Jan 2013

Latest activity Edited by MathWorks Support Team on 19 Apr 2023

Accepted Answer by MathWorks Support Team

Parallel Computing Parallel Computing Toolbox Batch Processing Detailed Job and Task Control Job and Task Creation

1

answer

0 votes
2 views

JPEG Compression with 8x8 DCT Block

Asked by Alejandro on 18 Feb 2023

Latest activity Commented on by Alejandro on 19 Feb 2023

Accepted Answer by Walter Roberson

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

1

answer

0 votes
2 views

IDCT of an image which has been blocked into 8x8 and then DCT'd not showing

Asked by tost on 3 Dec 2022

Latest activity Answered by V Sairam Reddy on 6 Dec 2022

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

2

answers

0 votes
0 views

Is there a function in MATLAB to calculate higher DCTs like DCT-III, IV etc?

Asked by sahil sharma on 13 Oct 2022

Latest activity Answered by Matt J on 13 Oct 2022

Accepted Answer by Matt J

Signal Processing DSP System Toolbox Transforms and Spectral Analysis Transforms

0

answers

0 votes
1 view

Human Visual System based watermarking scheme

Asked by Vasilije Vujadinovic on 31 May 2022

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

1

answer

0 votes
7 views

my DCT2 algorithm results in blank image, please help

Asked by liam xu on 23 May 2022

Latest activity Commented on by liam xu on 23 May 2022

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

6

answers

0 votes
24 views

Stegnaography using DCT

Asked by Pranoy on 29 Jan 2012

Latest activity Commented on by Ajmal Mohammed V M on 13 May 2022

Accepted Answer by Walter Roberson

MATLAB Graphics Images Read, Write, and Modify Image

0

answers

0 votes
3 views

image steganography in the dct domain

Asked by eng on 30 Jun 2015

Latest activity Commented on by Ajmal Mohammed V M on 11 May 2022

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

1

answer

0 votes
127 views

2-DCT Image compression

Asked by Amarnath R on 3 Nov 2018

Latest activity Commented on by Ibnsina Faiz Azzi on 22 Apr 2022

Signal Processing Wavelet Toolbox Denoising and Compression

0

answers

0 votes
5 views

Audio Compression with DCT method

Asked by Mohammad Azhar on 21 Apr 2022

Latest activity Commented on by Mohammad Azhar on 21 Apr 2022

Signal Processing Wavelet Toolbox Denoising and Compression

1

answer

2 votes
0 views

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

Asked by Mohamed Gharbi on 7 Mar 2020

Latest activity Commented on by Walter Roberson on 31 Mar 2022

Parallel Computing Parallel Computing Toolbox GPU Computing

0

answers

0 votes
1 view

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

Asked by Amanurdeep Ka on 11 Apr 2014

Latest activity Commented on by DGM 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 by mohammad nemat on 25 Jan 2022

Latest activity Answered by yanqi liu on 26 Jan 2022

Accepted Answer by yanqi liu

Image Processing and Computer Vision Computer Vision Toolbox Recognition, Object Detection, and Semantic Segmentation Image Category Classification

1

answer

0 votes
1 view

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 by JAHED HASSAN on 29 Dec 2021

Latest activity Answered by Image Analyst on 29 Dec 2021

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

1

answer

0 votes
1 view

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

Asked by Chandvi Arora on 19 Jul 2017

Latest activity Commented on by Deo Kelvin on 28 Dec 2021

Accepted Answer by Walter Roberson

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

0

answers

0 votes
0 views

In MATLAB dct command is not supporting

Asked by Horendra Nath Gogoi on 7 Nov 2021

Latest activity Commented on by Steven Lord on 7 Nov 2021

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

2

answers

0 votes
30 views

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

Asked by Ari M Salih on 29 Apr 2019

Latest activity Edited by Image Analyst on 23 Oct 2021

Accepted Answer by Stephane Dauvillier

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

0

answers

0 votes
1 view

How to combine dct and dwt

Asked by Nur Fatimah on 30 Aug 2021

Latest activity Edited by Srijith Kasaragod on 2 Sep 2021

Signal Processing Wavelet Toolbox Discrete Multiresolution Analysis

1

answer

0 votes
1 view

how to do watermarking using dct.

Asked by yashi gautam on 1 Feb 2016

Latest activity Commented on by Ragini Gaikwad on 14 Jun 2021

Accepted Answer by Walter Roberson

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

1

answer

0 votes
7 views

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

Asked by mohammad nemat on 30 May 2021

Latest activity Edited by Jonas on 31 May 2021

MATLAB Graphics Images Convert Image Type

1

answer

0 votes
12 views

How to fix error in port widths or dimentions on the reshape block input?

Asked by Alexander Semenov on 16 May 2021

Latest activity Answered by Andy Bartlett on 18 May 2021

Accepted Answer by Andy Bartlett

Image Processing and Computer Vision Computer Vision Toolbox Computer Vision with Simulink

1

answer

0 votes
3 views

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 by Talha Chafekar on 20 Apr 2021

Latest activity Answered by Divija Aleti on 23 Apr 2021

MATLAB Language Fundamentals Data Types Numeric Types Logical

1

answer

0 votes
8 views

DCT transformation

Asked by amitesh kumar on 15 Feb 2011

Latest activity Answered by Robert Brown on 18 Apr 2021

Image Processing and Computer Vision Image Processing Toolbox Image Segmentation and Analysis Region and Image Properties

0

answers

0 votes
7 views

inverse quantization in simulink

Asked by Anil Chowdary Tummala on 4 Feb 2021

Signal Processing Wavelet Toolbox Denoising and Compression

2

answers

0 votes
3 views

How can I turn a grayscale image into a 8x8 block and then show the DCT coefficients in each block as an image?

Asked by Osman on 8 Nov 2015

Latest activity Answered by TUMMALA ANIL CHOWDARY on 27 Jan 2021

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

2

answers

0 votes
1 view

how to hide a binary image within an rgb image?

Asked by chaithra on 29 Jan 2014

Latest activity Commented on by Ishara Kariyawasam on 19 Jan 2021

Accepted Answer by Shivaputra Narke

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

1

answer

0 votes
10 views

copy-move image forgery detection using DCT

Asked by Haya Binsalim on 30 Nov 2020

Latest activity Answered by Priysha LNU on 7 Jan 2021

MATLAB Data Import and Analysis Data Import and Export Standard File Formats JSON Format

1

answer

0 votes
2 views

Matrix dimensions must agree error when using DCT2?

Asked by Harry West on 8 Dec 2020

Latest activity Answered by Abhishek Gupta on 14 Dec 2020

MATLAB Get Started with MATLAB

1

answer

0 votes
5 views

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

Asked by Clement Chua on 5 Dec 2020

Latest activity Answered by Keerthana Chiruvolu on 8 Dec 2020

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

0

answers

0 votes
7 views

Watermarking in the Frequency Domain

Asked by Hadi Ghahremannezhad on 11 Nov 2020

Latest activity Commented on by Hadi Ghahremannezhad on 12 Nov 2020

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

1

answer

0 votes
8 views

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

Asked by MathWorks Support Team on 10 Sep 2012

Latest activity Edited by MathWorks Support Team on 5 Nov 2020

Accepted Answer by MathWorks Support Team

Simulink Modeling Design Model Behavior Multicore Processor Targets

1

answer

0 votes
1 view

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

Asked by MathWorks Support Team on 27 Jun 2009

Latest activity Edited by MathWorks Support Team on 3 Nov 2020

Accepted Answer by MathWorks Support Team

MATLAB Environment and Settings Startup and Shutdown

1

answer

1 vote
5 views

Audio compression using DCT

Asked by rachel cn on 15 Oct 2020

Latest activity Commented on by rachel cn on 17 Oct 2020

Accepted Answer by Walter Roberson

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

1

answer

0 votes
0 views

Cartoon Image compression algorithm using DCT

Asked by Laura Passalacqua on 4 Sep 2020

Latest activity Answered by Sarvani Panguluri on 7 Sep 2020

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

0

answers

0 votes
2 views

dct function throwing error using identity matrix as its parameter

Asked by Jong Sung Park on 16 Aug 2020

Latest activity Commented on by John D'Errico on 16 Aug 2020

MATLAB Language Fundamentals Data Types Numeric Types Logical

1

answer

0 votes
4 views

DCT in matlab using radians or degree

Asked by Della N on 5 Jul 2020

Latest activity Commented on by Della N on 15 Jul 2020

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

0

answers

0 votes
0 views

Error with dct (version 2020)

Asked by Lucas Montes on 7 Jul 2020

Signal Processing Signal Processing Toolbox Signal Generation and Preprocessing

0

answers

0 votes
3 views

how implement DCT stegnography

Asked by amal on 21 Sep 2014

Latest activity Commented on by Fady Samann on 13 Jun 2020

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

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 by Sai Nikhil Varada on 29 May 2020

Latest activity Commented on by Geoff Hayes on 29 May 2020

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

2

answers

0 votes
15 views

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

Asked by Osman on 9 Nov 2015

Latest activity Answered by GOKUL REDDY on 25 May 2020

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

1

answer

0 votes
0 views

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

Asked by Riza P on 1 Apr 2016

Latest activity Answered by sripradha iyengar on 5 May 2020

Image Processing and Computer Vision Computer Vision Toolbox Recognition, Object Detection, and Semantic Segmentation Image Category Classification

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 by Nishaban P.K. on 21 Apr 2020

Latest activity Answered by Prabhan Purwar on 24 Apr 2020

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

Results 1 - 50 of 259