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Add erode libopencv filter.

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Originally committed as revision 26097 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Stefano Sabatini 2010-12-26 11:27:09 +00:00
parent 91cbb6ba53
commit 17fc94933b
3 changed files with 19 additions and 1 deletions
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10
doc/filters.texi
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@ -532,6 +532,7 @@ informations:
Follows the list of supported libopencv filters.
@anchor{dilate}
@subsection dilate
Dilate an image by using a specific structuring element.
@ -578,6 +579,15 @@ ocv=dilate=5x5+2x2/cross:2
ocv=0x0+2x2/custom=diamond.shape:2
@end example
@subsection erode
Erode an image by using a specific structuring element.
This filter corresponds to the libopencv function @code{cvErode}.
The filter accepts the parameters: @var{struct_el}:@var{nb_iterations},
with the same meaning and use of those of the dilate filter
(@pxref{dilate}).
@subsection smooth
Smooth the input video.

2
libavfilter/avfilter.h
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@ -28,7 +28,7 @@
#define LIBAVFILTER_VERSION_MAJOR 1
#define LIBAVFILTER_VERSION_MINOR 70
#define LIBAVFILTER_VERSION_MICRO 1
#define LIBAVFILTER_VERSION_MICRO 2
#define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \
LIBAVFILTER_VERSION_MINOR, \

8
libavfilter/vf_libopencv.c
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@ -291,6 +291,13 @@ static void dilate_end_frame_filter(AVFilterContext *ctx, IplImage *inimg, IplIm
cvDilate(inimg, outimg, dilate->kernel, dilate->nb_iterations);
}
static void erode_end_frame_filter(AVFilterContext *ctx, IplImage *inimg, IplImage *outimg)
{
OCVContext *ocv = ctx->priv;
DilateContext *dilate = ocv->priv;
cvErode(inimg, outimg, dilate->kernel, dilate->nb_iterations);
}
typedef struct {
const char *name;
size_t priv_size;
@ -301,6 +308,7 @@ typedef struct {
static OCVFilterEntry ocv_filter_entries[] = {
{ "dilate", sizeof(DilateContext), dilate_init, dilate_uninit, dilate_end_frame_filter },
{ "erode", sizeof(DilateContext), dilate_init, dilate_uninit, erode_end_frame_filter },
{ "smooth", sizeof(SmoothContext), smooth_init, NULL, smooth_end_frame_filter },
};