Convert an IplImage to SDL_Surface with single nChannals
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0
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How to convert an IpLImage to SDL_Surface.
I used this postto convert an image with 8 nChannels and it worked perfectly, but when I try this with an image of a single nChannel it displays the following message on the console:
Depth 8, nChannels 1, pitch 640
Unable to convert the IplImage image ! SDL Error: Unknown pixel format
And this is the code I used :
int pitch = colored_capture->nChannels * colored_capture->width;
printf("Depth %d, nChannels %d, pitch %dn", colored_capture->depth,
colored_capture->nChannels, pitch);
surface_1 = SDL_CreateRGBSurfaceFrom((void*)colored_capture->imageData,
colored_capture->width,
colored_capture->height,
colored_capture->depth * colored_capture->nChannels,
colored_capture->widthStep,
0x0000ff, 0x00ff00, 0xff0000, 0);
if (surface_1 == NULL)
{
fprintf ( stderr ,"Unable to convert the IplImage image ! SDL
Error: %s n", SDL_GetError());
}
c opencv sdl sdl-2 iplimage
asked Nov 19 at 14:22
SenDjasni
3610
|
show 2 more comments
up vote
0
down vote
favorite
How to convert an IpLImage to SDL_Surface.
I used this postto convert an image with 8 nChannels and it worked perfectly, but when I try this with an image of a single nChannel it displays the following message on the console:
Depth 8, nChannels 1, pitch 640
Unable to convert the IplImage image ! SDL Error: Unknown pixel format
And this is the code I used :
int pitch = colored_capture->nChannels * colored_capture->width;
printf("Depth %d, nChannels %d, pitch %dn", colored_capture->depth,
colored_capture->nChannels, pitch);
surface_1 = SDL_CreateRGBSurfaceFrom((void*)colored_capture->imageData,
colored_capture->width,
colored_capture->height,
colored_capture->depth * colored_capture->nChannels,
colored_capture->widthStep,
0x0000ff, 0x00ff00, 0xff0000, 0);
if (surface_1 == NULL)
{
fprintf ( stderr ,"Unable to convert the IplImage image ! SDL
Error: %s n", SDL_GetError());
}
c opencv sdl sdl-2 iplimage
asked Nov 19 at 14:22
SenDjasni
3610
If it is only 8 bits per pixel, why masks describe it as 24 bit? What is your source data? Is it grayscale? Indexed? In what format do you want to get your resulting surface?
– keltar
Nov 19 at 19:00
I applied theCannyEdgeFilteron a image captured by a camera and when I tried to convert it toSDL_Surfacewith the code appove, it didn't work.
– SenDjasni
Nov 20 at 16:31
..which creates grayscale image, as I had to google just now. Still no indication of what you need SDL surface for, and what format should it have. If you really don't care (can't imagine why), take a look at e.g. stackoverflow.com/questions/27204397/greyscale-image-in-sdl2
– keltar
Nov 20 at 17:44
well, I need to visualize two images, the original one and another that I will apply some CV processing on it, and all that using only low-level library, that why I chose SDL. For the format, I think it doesn't matter cuz all I do is visualization.
– SenDjasni
Nov 20 at 20:43
@keltar what do you think about using Gtk instead of SDL ?
– SenDjasni
Nov 24 at 17:50
|
show 2 more comments
up vote
0
down vote
favorite
up vote
0
down vote
favorite
How to convert an IpLImage to SDL_Surface.
I used this postto convert an image with 8 nChannels and it worked perfectly, but when I try this with an image of a single nChannel it displays the following message on the console:
Depth 8, nChannels 1, pitch 640
Unable to convert the IplImage image ! SDL Error: Unknown pixel format
And this is the code I used :
int pitch = colored_capture->nChannels * colored_capture->width;
printf("Depth %d, nChannels %d, pitch %dn", colored_capture->depth,
colored_capture->nChannels, pitch);
surface_1 = SDL_CreateRGBSurfaceFrom((void*)colored_capture->imageData,
colored_capture->width,
colored_capture->height,
colored_capture->depth * colored_capture->nChannels,
colored_capture->widthStep,
0x0000ff, 0x00ff00, 0xff0000, 0);
if (surface_1 == NULL)
{
fprintf ( stderr ,"Unable to convert the IplImage image ! SDL
Error: %s n", SDL_GetError());
}
c opencv sdl sdl-2 iplimage
asked Nov 19 at 14:22
SenDjasni
3610
How to convert an IpLImage to SDL_Surface.
I used this postto convert an image with 8 nChannels and it worked perfectly, but when I try this with an image of a single nChannel it displays the following message on the console:
Depth 8, nChannels 1, pitch 640
Unable to convert the IplImage image ! SDL Error: Unknown pixel format
And this is the code I used :
int pitch = colored_capture->nChannels * colored_capture->width;
printf("Depth %d, nChannels %d, pitch %dn", colored_capture->depth,
colored_capture->nChannels, pitch);
surface_1 = SDL_CreateRGBSurfaceFrom((void*)colored_capture->imageData,
colored_capture->width,
colored_capture->height,
colored_capture->depth * colored_capture->nChannels,
colored_capture->widthStep,
0x0000ff, 0x00ff00, 0xff0000, 0);
if (surface_1 == NULL)
{
fprintf ( stderr ,"Unable to convert the IplImage image ! SDL
Error: %s n", SDL_GetError());
}
c opencv sdl sdl-2 iplimage
c opencv sdl sdl-2 iplimage
asked Nov 19 at 14:22
SenDjasni
3610
asked Nov 19 at 14:22
SenDjasni
3610
edited Nov 19 at 18:33
asked Nov 19 at 14:22
SenDjasni
3610
asked Nov 19 at 14:22
SenDjasni
3610
asked Nov 19 at 14:22
SenDjasni
3610
3610
If it is only 8 bits per pixel, why masks describe it as 24 bit? What is your source data? Is it grayscale? Indexed? In what format do you want to get your resulting surface?
– keltar
Nov 19 at 19:00
I applied theCannyEdgeFilteron a image captured by a camera and when I tried to convert it toSDL_Surfacewith the code appove, it didn't work.
– SenDjasni
Nov 20 at 16:31
..which creates grayscale image, as I had to google just now. Still no indication of what you need SDL surface for, and what format should it have. If you really don't care (can't imagine why), take a look at e.g. stackoverflow.com/questions/27204397/greyscale-image-in-sdl2
– keltar
Nov 20 at 17:44
well, I need to visualize two images, the original one and another that I will apply some CV processing on it, and all that using only low-level library, that why I chose SDL. For the format, I think it doesn't matter cuz all I do is visualization.
– SenDjasni
Nov 20 at 20:43
@keltar what do you think about using Gtk instead of SDL ?
– SenDjasni
Nov 24 at 17:50
|
show 2 more comments
If it is only 8 bits per pixel, why masks describe it as 24 bit? What is your source data? Is it grayscale? Indexed? In what format do you want to get your resulting surface?
– keltar
Nov 19 at 19:00
I applied theCannyEdgeFilteron a image captured by a camera and when I tried to convert it toSDL_Surfacewith the code appove, it didn't work.
– SenDjasni
Nov 20 at 16:31
..which creates grayscale image, as I had to google just now. Still no indication of what you need SDL surface for, and what format should it have. If you really don't care (can't imagine why), take a look at e.g. stackoverflow.com/questions/27204397/greyscale-image-in-sdl2
– keltar
Nov 20 at 17:44
well, I need to visualize two images, the original one and another that I will apply some CV processing on it, and all that using only low-level library, that why I chose SDL. For the format, I think it doesn't matter cuz all I do is visualization.
– SenDjasni
Nov 20 at 20:43
@keltar what do you think about using Gtk instead of SDL ?
– SenDjasni
Nov 24 at 17:50
If it is only 8 bits per pixel, why masks describe it as 24 bit? What is your source data? Is it grayscale? Indexed? In what format do you want to get your resulting surface?
– keltar
Nov 19 at 19:00
If it is only 8 bits per pixel, why masks describe it as 24 bit? What is your source data? Is it grayscale? Indexed? In what format do you want to get your resulting surface?
– keltar
Nov 19 at 19:00
I applied the
CannyEdgeFilter on a image captured by a camera and when I tried to convert it to SDL_Surface with the code appove, it didn't work.– SenDjasni
Nov 20 at 16:31
I applied the
CannyEdgeFilter on a image captured by a camera and when I tried to convert it to SDL_Surface with the code appove, it didn't work.– SenDjasni
Nov 20 at 16:31
..which creates grayscale image, as I had to google just now. Still no indication of what you need SDL surface for, and what format should it have. If you really don't care (can't imagine why), take a look at e.g. stackoverflow.com/questions/27204397/greyscale-image-in-sdl2
– keltar
Nov 20 at 17:44
..which creates grayscale image, as I had to google just now. Still no indication of what you need SDL surface for, and what format should it have. If you really don't care (can't imagine why), take a look at e.g. stackoverflow.com/questions/27204397/greyscale-image-in-sdl2
– keltar
Nov 20 at 17:44
well, I need to visualize two images, the original one and another that I will apply some CV processing on it, and all that using only low-level library, that why I chose SDL. For the format, I think it doesn't matter cuz all I do is visualization.
– SenDjasni
Nov 20 at 20:43
well, I need to visualize two images, the original one and another that I will apply some CV processing on it, and all that using only low-level library, that why I chose SDL. For the format, I think it doesn't matter cuz all I do is visualization.
– SenDjasni
Nov 20 at 20:43
@keltar what do you think about using Gtk instead of SDL ?
– SenDjasni
Nov 24 at 17:50
@keltar what do you think about using Gtk instead of SDL ?
– SenDjasni
Nov 24 at 17:50
|
show 2 more comments
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If it is only 8 bits per pixel, why masks describe it as 24 bit? What is your source data? Is it grayscale? Indexed? In what format do you want to get your resulting surface?
– keltar
Nov 19 at 19:00
I applied the
CannyEdgeFilteron a image captured by a camera and when I tried to convert it toSDL_Surfacewith the code appove, it didn't work.– SenDjasni
Nov 20 at 16:31
..which creates grayscale image, as I had to google just now. Still no indication of what you need SDL surface for, and what format should it have. If you really don't care (can't imagine why), take a look at e.g. stackoverflow.com/questions/27204397/greyscale-image-in-sdl2
– keltar
Nov 20 at 17:44
well, I need to visualize two images, the original one and another that I will apply some CV processing on it, and all that using only low-level library, that why I chose SDL. For the format, I think it doesn't matter cuz all I do is visualization.
– SenDjasni
Nov 20 at 20:43
@keltar what do you think about using Gtk instead of SDL ?
– SenDjasni
Nov 24 at 17:50