Questions tagged [bitmap]
The bitmap tag has no usage guidance.
14
questions
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57
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Pset3-resize explaination
I am struggling to understand how to approach resize problem. I see there are alot of codes available for me to use directly. I do understand the problem, Zymal's pesudocode, but the lack of clarity ...
- 5
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1
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308
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How does RGBTRIPLE differentiate between the 3 bytes it reads from input file and assign them to rgbt blue, green and red?
sorry if the question is confusing, but i completed the whodunit problem in pset3 and my doubt was that in the following code:
// iterate over pixels in scanline
for (int j = 0; j < bi....
- 5
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0
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76
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Is resize.c/more functionality for n < 1 subjective?
I am having issues with getting my outfiles for n = 0.5 to match check50's. To scale a bitmap image down pixels must be removed, and the algorithm we're required to write is what will choose which ...
- 101
1
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1
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781
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Pset 4: Resize (more) -- check50 all correct except one
The code I have written for resize checks out visually for all float values (0.0,100.0]. Also, check50 agrees that my code is functioning properly save for one specific case:
:) resize.c and bmp.h ...
0
votes
2
answers
414
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Pset4 resize: Invalid or Unsupported Image Format
I have only written my code for the resize (more) problem up to the point where I rewrite the headers for the new outfile. At this point in my code, I only expect my code to work when I have an input ...
0
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1
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128
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Why does my output image look like this for pset4 resize?
Please see code below, I know my fseek is incorrect, as im offseting the size of RGBTRIPLE whereas I want to offset the size of the buffer.
/**
* copy.c
*
* Computer Science 50
* Problem Set ...
1
vote
1
answer
246
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How to resize vertically for pset4?
following the pseudocode to resize vertically - can you tell me if I'm on the right lines? Looks like too many nested for loops.
// horizontal resize
// for each row
for (int i = 0; i <...
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1
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51
views
Issues with padding - why am I getting a black image for every outfile?
See code below:
/**
* copy.c
*
* Computer Science 50
* Problem Set 4
*
* Copies a BMP piece by piece, just because.
*/
#include <stdio.h>
#include <stdlib.h>
#include "bmp.h"
int main(...
0
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1
answer
58
views
Pset4: Resize: Unsupported image format
Why am I only getting unsupported image format when trying to resize clue.bmp. I have tried with small,large and smiley and these all seem to be working.
The image is being resized correctly but the ...
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1
answer
138
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PSET4 Resize: image resizes but fails check50 (PADDING or HEADER???)
I thought I was confused before I had this "clarification": check50 gives confusing results for pset4 resize. Now I'm flat out lost. For this challenge I actually tried to use a function to hold all ...
- 67
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77
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Bitmap Header info
How could I see the bmp header/metadata info for the verdict.bmp file. Is there any command exist similar to 'peek large.bmp' ?
- 3
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143
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pset4 resize premature end of file encountered
This is extremely frustrating. I've been having header problems for a while, getting various error messages. However, using xxd I can see that when I run resize with n=2, biSizeImage is indeed 120, ...
0
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1
answer
161
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Pset4 Resize: Incorrect scaling of image
Once again I find myself stumped by CS50. In the below code I have done my best to try to mathematically edit the Bitmap Headers using a variable I named "scalefactor" which is determined by the user, ...
- 13
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1
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88
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Resize problem in pset4
I find that a bitmap which is been provided has following properties.
{biSize = 40, biWidth = 3, biHeight = -3, biPlanes = 1, biBitCount = 24, biCompression = 0, biSizeImage = 36, biXPelsPerMeter = ...
- 3
