Ahmed Al-Qarqaz

Last seen: 5 years ago | Active since 2020

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Resulting image keeps having high contrast
hello i wrote a simple code using a simple algorithm to understand steganography better , using LSB i hide the pixel values of o...

5 years ago | 0 answers | 0

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Question

How to lower frame rate of a video without changing the duration of the video
i want to lower the frame rate of a video without actually changing the duration of the video, i realise that this means i am lo...

5 years ago | 1 answer | 0

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Question

I keep trying to convert a video grayscale but it gives me an error?
hi, i want to convert a video into grayscale, but it keeps giving me an error, specifically a "parse_input" error my code: %Cr...

5 years ago | 1 answer | 0

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What is wrong in my code for converting from rgb to yiq and from yiq to rgb
this is a code i wrote to converte RGB image to YIQ (NTSC), the problem is i give it an rgb image but the color of the image chn...

5 years ago | 2 answers | 0

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I don't fully understand Chroma Sub-sampling 4:2:0 ?
i want to implement chroma subsampling 4:2:0 by a fcator of 2, horizontally and vertically, where we calculate the average chrom...

5 years ago | 0 answers | 0

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Question

Fastest way to find the row number containing the most amount of black pixels in a gray-scale image?
The way i did it is by looping over the matrix and counting number of black pixels in each row then comparing them ,the criteria...

5 years ago | 1 answer | 0

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Question

how to print multiple variables with strings in between ?
im trying to write a code for a function that prints (outputs) a couple of variables . basically what im trying to do is simila...

5 years ago | 1 answer | 0

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