Questions tagged [pset4filter]
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69
questions
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1answer
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Runtime error in pset4
I'm currently working on filter.c, and I'm struggling with the blur segment of it. I tried to write a code (I'm aware it's a mess of hard-code, but it's an attempt!), but I keep getting this error:
...
0
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1answer
22 views
CS50 Pset4 Filter (More comfortable) Edges Function
I am trying to code CS50's Pset4 Filter (More comfortable)'s edges function, but I keep on getting a different value.
This is the link to the video explaining what I am trying to do in this function, ...
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0answers
8 views
Pset4 filter (more) - Edge Help
I stuck on pset4 for days. Only the corners passed check50.
Any help, please?
void edges(int height, int width, RGBTRIPLE image[height][width])
{
int cap (int c);
//get a copy of all the ...
0
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2answers
36 views
Help with pset4 filter edge detection function
I have some problems with the edges function. The code compiles fine and all but the result looks like this:
https://imgur.com/a/S2MQLom
The edges of the image and one third of it don't look as ...
0
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1answer
29 views
pset4 filter - blur function only filters image corners
This is my second attempt at this problem, and a full rewrite; I tried once before to be as eloquent as I could, and it was just totally wrong and bizarre. So I just tried to make this one as readable ...
0
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1answer
27 views
Pset 4 Filter - Blur
My blur filter produces a decent looking blurred image and passes the Check50 corner pixel case.
I define the cases for the edges and the middle pixels and then manually calculate the average RGB ...
0
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1answer
22 views
PSET4 Reflection Filter
I'm having trouble getting my head around the pointers needed for the reflection filter.
I have got to here and can't get the syntax right. Any tips would be much appreciated.
Thanks.
void reflect(int ...
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1answer
38 views
PSET 4 BLUR and 2 of REFLECT
All of reflect works except reflected a 1 x 2 and a 4 x 4 (3x3 works fine)
None of blur works except for when a point is in the corner, which makes little sense.
I've sluthed around other answers and ...
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0answers
11 views
Why does the code output incorrect amounts?
The code is here: https://pastebin.com/gKnVmPFf
I've checked that it's not because of neighboring cells, because I am translating them onto a different array. I can't seem to figure out want is wrong. ...
0
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1answer
17 views
Pset4 less comfortable compile error
When I try to compile my helpers.c file the compiler shows me
clang -ggdb3 -O0 -std=c11 -Wall -Werror -Wextra -Wno-sign-compare -Wno-unused-parameter -Wno-unused-variable -Wshadow helpers.c -...
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vote
1answer
16 views
pset4 - Green and Blue off in filter (less)
My code is here.
void sepia(int height, int width, RGBTRIPLE image[height][width])
{ for (int i = 0; i < height; i++)
{
for (int j = 0; j < width; j++)
{
...
0
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1answer
18 views
At my wits end on pset4 filter blur
I am stumped on this problem, more specifically, on the blur filter. I can't see anything wrong with the program, but it still errors out on check50. It seems that the middle function is correct, but ...
0
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1answer
41 views
Need help with CS50's Filter (less) Blur
I'm doing CS50 and trying really hard to keep sane while I try to finish the last part of the Filter (less) exercise. I'm stuck on "Blur". I've tried to resist looking for help online ...
0
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1answer
37 views
PSET4 Filter (more) Edge
I got some weird issue with my code!
It compiles without any problems. All other filters work perfectly, and check50 shows no problems (no problem in edge according to check50).
But, when i try edge ...
0
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1answer
17 views
Is there an operator for raising in a power in C?
In PSET4 Edges Filter problem you are supposed to calculate Gx ^ 2. But the operator ^ in C does not seem to mean raising in a power. For Gx = -9 it returns Gx ^ 2 = -11 and so on. Turned out ^ is XOR ...
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1answer
18 views
Pset4 Reflect not working on 4x4 image
I get the eror only for the 4x4 image, the others are correct. Seems like the values are swapped between each other, but I cant find a way to fix it. Something in the inner loop (I think) is swapping ...
0
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1answer
46 views
Help with Blur filter! The output image is not blurred, but is returned as a darker image of the input
I have been stuck on this problem for days and have tried so many ways to write this code, but I continuously get errors. Nothing works. The output file is just returned as a darker image of the input ...
0
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1answer
27 views
What is wrong with my filter blur?
Been stuck on the blurring part for ages... I've ran out of ideas and motivation to debug at this point after spending an eternity cutting down my spaghetti codes to pappardelle.
Any help/hint/...
0
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1answer
70 views
PSET 4 - Filter: Anyone able to help me on Edges?
I'm having a lot of trouble figuring out how my code for edges is failing so badly every time. Any help on this would be greatly appreciated! Here is what I'm getting back from check50:
:( edges ...
0
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0answers
22 views
PSET4 - Filter (Less) Blur - Keep getting :( blur correctly filters middle pixel expected “127 140 149\n”, not “118 131 140\n”
void blur(int height, int width, RGBTRIPLE image[height][width])
{
//A box blur
//take the average of the surrounding pixels (1 row and 1 column away)
//Store all the surrounding and find ...
0
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1answer
31 views
CS50 PSET4 Edge calculates correct values on all tests unless the correct value is 255
I am having problems with CS50 PSet 4 - Edge. The method passes the middle pixel test (which has no value of 255 on any channel) but on any other test all the values in each channel are correct ...
0
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1answer
39 views
PSET 4 blur function only passing one test case
void blur(int height, int width, RGBTRIPLE image[height][width])
{
RGBTRIPLE copy[height][width];
int counter = 0;
int red = 0;
int blue = 0;
int green = 0;
for(int i=0; i<height; i++)
{
...
0
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1answer
26 views
CS50 Filter blur
When I tried running this code under Check50, the value returned was completely off for some reason but I can't seem to figure out why. I then reduced the code to only calculating the rgbtBlue value ...
0
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1answer
12 views
What is the explaination of the declaration of image array in filter
I was looking through the filter.c file in the pset4-filter-less and I want to understand the theory behind the declaration of array as shown below:
RGBTRIPLE(*image)[width] = calloc(height, width * ...
0
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1answer
17 views
Pset4 Grayscale Not doing anything to image - Nothing happens to the images spit out of this am I doing something wrong?
void grayscale(int height, int width, RGBTRIPLE image[height][width])
{
//Image[0] is the first row of the image and Image[height - 1] is the last row of the image
//Image[0][0] is the first ...
0
votes
1answer
39 views
Getting partial output in Blur (pset4 filter) , trying to debug edge and middle pixel
My program when run through check50 says the corner pixels work but nothing else seems to work. I have been stuck on this problem for days and after not getting any considerable reply on the cs50 ...
0
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1answer
41 views
Pset4 less comfortable errors!
i just finished Week 4's Lecture and started working on the "Feeling Less Comfortable" Filter project.
The issue is that I wanted to see how well everything worked before I went on to submit it and ...
0
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1answer
59 views
PSET4 FILTER(LESS) BLUR HELP!
I'm struggling to figure out exactly what's wrong with the code since I think it mathematically checks out and covers every possibility of an image. Please do take a look at my code and maybe you'll ...
0
votes
2answers
104 views
PSET 4 Errors: where did I go wrong?
So after being stuck on this pset for overlooking tiny typos I have finally gotten it to compile but I received more errors then I would like to have. If anyone could tell me where I can find the ...
0
votes
1answer
57 views
Edge detection produces weird outputs
I've been stuck on this for the past while and I'm not sure what's wrong in my algorithm. I get complete nonsense for outputs and I'm kind of lost on where to go from here. Any help would be ...
0
votes
1answer
43 views
pset4 filter “edge” passed check50, but can't produce images. SEGV on unknown address
The gray, blur and reflection filter went well and can product correct images. For the "edge" filter, it passed check50, but when I tried to input image and run it, it shows below:
...
0
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1answer
38 views
PSET4 - Filter edge too yellow
folks!
I'm working on the edge detection algorithm, but for some reason, the image is turning out too yellow. I wonder if someone can give me some sort of hint at what I'm doing wrong, since I haven'...
0
votes
1answer
26 views
PSET 4 Filter / Blur : I couldn't pass a struct as an function argument what is the reasson?
in order to blur the pixels I created 3 functions.
BLUR
-Create a new image so old date won't corrupt
- iterate over the new image
-blur_color
- To taking the averages of the color values
-...
0
votes
3answers
30 views
Blur works visually, but check50 reads errors for every section
I know that the edges and corners are supposed to read errors, because I haven't fixed them yet. What I don't understand is why check50 reads errors for middle pixels.
// Blur image
void blur(int ...
0
votes
1answer
72 views
pset4 Blur (Filter) not passing check50
following is my code for Blur. It works mathematically when I step through the loops for a given pixel using Tower, Yard, etc. But when running Check50, it fails every test except the corner test.
...
0
votes
1answer
139 views
pset4 filter won't open file
Every time I try to compile my code to check grayscale, I put in the input they gave in the instructions:
./filter -g infile.bmp outfile.bmp
But I keep getting this message saying Could not open ...
0
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1answer
51 views
FIlters (more) - Unable to crack Edge
Below is my code for Edges. Please help me by highlighting the errors. Thanks in advance.
Errors I am getting are:
:( edges correctly filters middle pixel
expected "210 150 60\n", not &...
0
votes
2answers
90 views
PSET 4 filter less comfortable (blur filter) help
Struggling with making the blur filter function for filter(less comfortable):
When i try to run the program with the input and output file i get the errors marked by the asterisk (*) on line 26,27,28....
0
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1answer
101 views
PSET 4 Filter (less) - Simplification of code for blur
My programme works, it compiles well and it passes the check50 checks. However, I don't like how it looks - I feel it's very cumbersome, too full of logical conditions.
I was wondering how I might ...
0
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1answer
49 views
I don't understand what's wrong with my Edge filter. Pset4
There are lots of runtime errors and overflowed integers with my code, and I have no idea why that is the case. Please could you check it out?
void edges(int height, int width, RGBTRIPLE image[height]...
0
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2answers
113 views
Pset 4 filter: reflect help
I have been stuck on pset4 for a while and when I try to compile my code I now get 3 errors in the reflect function which are:
helpers.c:83:6: error: conflicting types for 'swap'
void swap(int *a,...
0
votes
2answers
19 views
Blur function doesn't work properly in 3x3 and 4x4 case
I think it's happened during neighbors cell check. I adapt the code from Java stackoverflow. The first two pixels got the rest
void blur(int height, int width, RGBTRIPLE image[height][width])
{
//...
0
votes
1answer
138 views
pset4 filter - blur - runtime error, colors off
This is my first post; I hope I get the netiquette right. :-) I've been stuck on pset4 / filters / blur for days. The code compiles.
When I run it through check50, these two points are correct:
:) ...
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0answers
52 views
Pset4 , Filter (Reflect)
I am getting the following error in the reflect part of my filter and I am not sure what it means and how should i avoid it
helpers.c:71:23: error: subscript of pointer to function type 'void (int, ...
0
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1answer
54 views
pset4 Filter Reflect could anyone check my code, I can't find the error as to why it does not output desirably
// Reflect image horizontally
void reflect(int height, int width, RGBTRIPLE image[height][width])
{ int t[3]; // using temporary array to swap values
for(int i=0;i<height-1;i++) // loop thru ...
0
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0answers
60 views
Pset 4 filter(less comfortable) manipulating pointers through an array
Very new to coding, so please bear with me!
I've been trying to wrap my head around pointers/ addresses since Lecture 4 but I haven't been able to solve the following issue. I can make the following ...
0
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1answer
165 views
CS50 Blur issue
void blur(int height, int width, RGBTRIPLE image[height][width])
{
RGBTRIPLE holder[height][width];
int red;
int green;
int blue;
float counter;
for (int i = 0; i < height; i++)
{
for (int j ...
0
votes
2answers
960 views
PSET4 Filter: Blur help
While trying to create an algorithm to come up with the average of the color for all nine pixels (if using 9) I realized I would need a way to see how many surrounding pixels are used in the ...
0
votes
1answer
81 views
Blur error in CS50 problem set 4 — filter_less
I have been trying to figure out the error for hours long and still no success, it'll mean a lot to me if someone can tell me what is the error in this code in order to apply a blur filter.
I ...
1
vote
1answer
221 views
pset 4 filter edge not working
I am having issues with my implementation of edges. I decided to make a 'border' around the edges of the image made up of zeros (did this in a copyImage array). I get correct outputs for some of the ...
