pjreddie / vision-hw0 Goto Github PK

runfile('E:/Masters/6 sem/CV/RGB-HSV/vision-hw0-master/uwimg.py', wdir='E:/Masters/6 sem/CV/RGB-HSV/vision-hw0-master')
Traceback (most recent call last):

File "E:\Masters\6 sem\CV\RGB-HSV\vision-hw0-master\uwimg.py", line 5, in
import openslide

File "C:\Users\thond\AppData\Local\Programs\Python\Python36\Lib\site-packages\openslide_init_.py", line 29, in
from openslide import lowlevel

File "C:\Users\thond\AppData\Local\Programs\Python\Python36\Lib\site-packages\openslide\lowlevel.py", line 41, in
_lib = cdll.LoadLibrary('libopenslide-0.dll')

File "C:\Users\thond\anaconda3\lib\ctypes_init_.py", line 442, in LoadLibrary
return self._dlltype(name)

File "C:\Users\thond\anaconda3\lib\ctypes_init_.py", line 364, in init
self._handle = _dlopen(self._name, mode)

OSError: [WinError 126] The specified module could not be found

runfile('E:/Masters/6 sem/CV/RGB-HSV/vision-hw0-master/uwimg.py', wdir='E:/Masters/6 sem/CV/RGB-HSV/vision-hw0-master')
Traceback (most recent call last):

File "E:\Masters\6 sem\CV\RGB-HSV\vision-hw0-master\uwimg.py", line 5, in
import openslide

File "C:\Users\thond\AppData\Local\Programs\Python\Python36\Lib\site-packages\openslide_init_.py", line 29, in
from openslide import lowlevel

File "C:\Users\thond\AppData\Local\Programs\Python\Python36\Lib\site-packages\openslide\lowlevel.py", line 41, in
_lib = cdll.LoadLibrary('libopenslide-0.dll')

File "C:\Users\thond\anaconda3\lib\ctypes_init_.py", line 442, in LoadLibrary
return self._dlltype(name)

File "C:\Users\thond\anaconda3\lib\ctypes_init_.py", line 364, in init
self._handle = _dlopen(self._name, mode)

OSError: [WinError 126] The specified module could not be found

runfile('E:/Masters/6 sem/CV/RGB-HSV/vision-hw0-master/uwimg.py', wdir='E:/Masters/6 sem/CV/RGB-HSV/vision-hw0-master')
Traceback (most recent call last):

File "E:\Masters\6 sem\CV\RGB-HSV\vision-hw0-master\uwimg.py", line 5, in
import openslide

File "C:\Users\thond\AppData\Local\Programs\Python\Python36\Lib\site-packages\openslide_init_.py", line 29, in
from openslide import lowlevel

File "C:\Users\thond\AppData\Local\Programs\Python\Python36\Lib\site-packages\openslide\lowlevel.py", line 41, in
_lib = cdll.LoadLibrary('libopenslide-0.dll')

File "C:\Users\thond\anaconda3\lib\ctypes_init_.py", line 442, in LoadLibrary
return self._dlltype(name)

File "C:\Users\thond\anaconda3\lib\ctypes_init_.py", line 364, in init
self._handle = _dlopen(self._name, mode)

OSError: [WinError 126] The specified module could not be found

How to fix this error? Please share me some idea

Hello,
I am very enthusiastic about learning computer vision so I checked a couple of courses and someone personally recommended yours.
Hence, I watched the 7 of the lectures and attempted homeworks 0 and 1. First of all, I was using Windows, so the make wasn't working and I had to do some things with the Powershell to make it work. Then it worked good enough to compile and run the tests, but there were errors when I tried to python tryit.py:

Traceback (most recent call last):
File "C:\D\computer_vision\Computer-Vision\tryit.py", line 1, in
from uwimg import *
File "C:\D\computer_vision\Computer-Vision\uwimg.py", line 20, in
lib = CDLL(os.path.join(os.path.dirname(file), "libuwimg.so"), RTLD_GLOBAL)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\Noella\AppData\Local\Programs\Python\Python311\Lib\ctypes_init_.py", line 376, in init
self._handle = _dlopen(self._name, mode)
^^^^^^^^^^^^^^^^^^^^^^^^^
FileNotFoundError: Could not find module 'C:\D\computer_vision\Computer-Vision\libuwimg.so' (or one of its dependencies). Try using the full path with constructor syntax.

Given that there is no fun in just passing the tests without playing around with the images, I set up a Linux Virtual Machine (Ubuntu 22.04) thinking that would solve the problem. Indeed tryit.py could work, but it failed to save images. Sample error: Traceback (most recent call last):
File "C:\D\computer_vision\Computer-Vision\tryit.py", line 1, in
from uwimg import *
File "C:\D\computer_vision\Computer-Vision\uwimg.py", line 20, in
lib = CDLL(os.path.join(os.path.dirname(file), "libuwimg.so"), RTLD_GLOBAL)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\Noella\AppData\Local\Programs\Python\Python311\Lib\ctypes_init_.py", line 376, in init
self._handle = _dlopen(self._name, mode)
^^^^^^^^^^^^^^^^^^^^^^^^^
FileNotFoundError: Could not find module 'C:\D\computer_vision\Computer-Vision\libuwimg.so' (or one of its dependencies). Try using the full path with constructor syntax.

PLEASE, if you give another course, clearly indicate the machine/OS prerequisites for homeworks. The lectures are great but there is no point if I can't get my hands dirty.

I'm sorry ask question using issue.

Shift image result try below 3 methods and save image not as your example.

Could you hint what formula you mean.

thank you very much.

void shift_image(image im, int c, float v)
{
// TODO Fill this in
int i,j,k=c;
for(j = 0; j < im.h; ++j){
for(i = 0; i < im.w; ++i){
int dst_index = i + im.w*j + im.w*im.h*k;
//im.data[dst_index] += im.data[dst_index]*v;
//im.data[dst_index] += 255.0*v;
im.data[dst_index] += (im.data[i + im.w*j]*0.299+im.data[i + im.w*j+ im.w*im.h*1]*0.587+im.data[i + im.w*j+ im.w*im.h*2]*0.114)*v;

	}
}

}

im = load_image("data/dog.jpg");
shift_image(im, 0, .4);
shift_image(im, 1, .4);
shift_image(im, 2, .4);
save_image(im, "overflow");

Hi Joseph,

Thank you and your team for the great course.
I'm trying to solve the extra problem "rgb to HCL".
I think I found relevant materials for the task:

• https://poynton.ca/PDFs/coloureq.pdf
• https://books.google.fi/books?id=YpzWCwAAQBAJ&pg=PA350&lpg=PA350&dq=ciexyz+to+cieluv&source=bl&ots=SFn2uR3hcy&sig=ACfU3U1CGiP69v-UvWnWjnaedBDavkX-qA&hl=en&sa=X&ved=2ahUKEwjys6-MxuroAhWkysQBHTWEC7oQ6AEwBnoECBQQKQ#v=onepage&q=ciexyz%20to%20cieluv&f=false

I'm stuck in CIEYuv to CIELUV. According to the materials, I need to know the colour of the white point of the system. So it seems like the space is display-specific.

I could compute the constants by converting the (1,1,1) rgb values to YUV but it probably doesn't make sense.

This OpenCV documentation has hard-coded constants. I'm currently using those values but I'm clueless how those values were computed in the first place. Also, I don't know if those values are correct for my case.

Could you provide some tips?
Thank you!

Br,
Seyoung

On executing make command, it is showing the following error,
make: *** No rule to make target 'obj/load_image.o', needed by 'libuwimg.so'. Stop.

C:\Users\페드로\Desktop\vision-hw0-master>make
gcc -Iinclude/ -Isrc/ -Wall -Wno-unknown-pragmas -Wfatal-errors -fPIC -Ofast -c ./src/load_image.c -o obj/load_image.o
process_begin: CreateProcess(NULL, gcc -Iinclude/ -Isrc/ -Wall -Wno-unknown-pragmas -Wfatal-errors -fPIC -Ofast -c ./src/load_image.c -o obj/load_image.o, ...) failed.
make (e=2): The system cannot find the file specified.
make: *** [Makefile:58: obj/load_image.o] Error 2

Windows 10 (x86) "make" after installing chocolatey.
Makefile is the provided one.

GCC is not installed, should I install it?
And which file is missing?

Hi there,

Big fan of the course so far. One note.

In the README, it shows this code

set_pixel(im, row, col, 0, 0)

But the actual code (correctly) has
set_pixel(im, col, row, 0, 0)