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Chandvi Arora


Active since 2017

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I want to access every nth value of a large matrix. How can I do that?
I require a matlab code for resultant matrix obtained by picking every 9th element of a very large matrix. How can I do that?

7 years ago | 1 answer | 0

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answer

Question


How to divide an image into blocks if my image size is not a multiple of the given number?
I have the following code with me to divide my bmp gray image into blocks:- img = imread('C:\somewhere\someimage.bmp'); numb...

7 years ago | 0 answers | 0

0

answers

Question


How can we perform video compression in matlab?
I require a matlab code for the same.

7 years ago | 0 answers | 0

0

answers

Question


How can we perform audio compression?
I need a matlab code to perform audio compression.

7 years ago | 1 answer | 0

1

answer

Question


I want to divide my image into blocks of 8*8 and display those blocks as shown in the image attached.
I then want to determine dct of each 8*8 block and display the dct of any one block of my choice as a 8*8 matrix. Can I get a co...

7 years ago | 0 answers | 0

0

answers

Question


How can we perform motion estimation while video compression?
I require motion estimation to be done from the current frame and frames stored in the memory.

7 years ago | 0 answers | 0

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answers

Question


How do we perform motion compensation based prediction?
I need to perform it on the frames stored in a frame memory.

7 years ago | 0 answers | 0

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Question


How do we extract an m*n matrix from a larger p*q matrix?
I have an image which is divided into 8*8 blocks grid. I am finding DCT of each block in this image using blocproc which is foll...

7 years ago | 1 answer | 0

1

answer

Question


Does mp3write exist?
I used mp3write(d,sr,'piano.mp3'); instruction but matlab showed an error that mp3write does not exist. Please help me with this...

7 years ago | 1 answer | 0

1

answer

Question


Can we store the frames of a video in a variable or by any other method?
I basically need to create a frame memory(i.e. simply a place to store frames in my video) for my video. How can I do that? And ...

7 years ago | 1 answer | 0

1

answer

Question


I want to find DCT of a gray scale image. How to do it?
The gray scale image is divided into 8*8 blocks. How to find DCT of EACH 8*8 block and display dct of one block? Further, how to...

7 years ago | 1 answer | 0

1

answer

Question


How to divide a bmp image into blocks?
I want to divide a bmp image to a 8*8 blocks. Is there any way out? 'resize' only resizes the image but does not divide the imag...

7 years ago | 2 answers | 0

2

answers

Question


How can we perform inverse quantization of a quantized matrix?
How will we write the code for inverse quantisation?

7 years ago | 1 answer | 0

1

answer

Question


How can we subsample a YUV image?
I need to do this for image compression.

7 years ago | 0 answers | 0

0

answers

Question


When I am using A(:,9)= [ ]; for deletion, an error is shown (Matrix index is out of range for deletion.). What might the problem be?
The matrix in which I have to perform deletion is 1*18. how can I perform deletion of elements from 9-18 if A(:,9)= [ ];(This is...

7 years ago | 2 answers | 0

2

answers

Question


My DCT image is showing a zero matrix. Why is it so?
I converted YUV image to gray and then found its DCT and IDCT. The resulting image(IDCT one) is showing a zero matrix when I vie...

7 years ago | 1 answer | 0

1

answer

Question


What is the way to compress an audio file?
I need the code to compress an audio file using the steps shown in the word file attached. Please help me with the code. <<ht...

7 years ago | 0 answers | 0

0

answers

Question


How to convert a YUV image to grayscale? I need to use it for image compression.
Initially I am given an RGB image but in image compression I need to convert this image to YUV format, which in MATLAB is easy. ...

7 years ago | 1 answer | 0

1

answer