eessppeelllloo/veejay
1
0
Fork 0
mirror of https://github.com/game-stop/veejay.git synced 2025-12-14 11:50:02 +01:00
Code Issues Packages Projects Releases Wiki Activity

issue #42, add mean filter, constrain bg subtraction filters to 1 instance

Browse Source
This commit is contained in:
c0ntrol
2016-04-02 16:34:44 +02:00
parent 81da37e5f0
commit a2db1d5501
21 changed files with 493 additions and 144 deletions
Download Patch File Download Diff File Expand all files Collapse all files

86
veejay-current/veejay-server/libvje/effects/common.c
View File

@@ -94,7 +94,6 @@ static inline void linearBlend(unsigned char *src, int stride)
//#endif
}
matrix_t matrix_placementA(int photoindex, int size, int w , int h)
{
matrix_t m;
@@ -1717,6 +1716,32 @@ void veejay_histogram_equalize( void *his, VJFrame *f , int intensity, int stren
y[i] = LUT[ y[i] ];
}
void vje_histogram_auto_eq( VJFrame *frame )
{
const int len = frame->len;
const double alpha = 255.0 / len;
unsigned int i;
uint32_t H[GREY_LEVELS];
double C[GREY_LEVELS];
uint8_t *Y = frame->data[0];
veejay_memset( H, 0, sizeof(H));
for( i = 0; i < len; i ++ ) {
H[ Y[i] ] ++;
}
C[0] = round(alpha * H[0]);
for( i = 1; i < GREY_LEVELS; i ++ ) {
C[i] = round( C[i - 1] + alpha * H[i] );
}
for( i = 0; i < len; i ++ )
{
Y[i] = (uint8_t) C[ Y[i] ];
}
}
void veejay_histogram_analyze_rgb( void *his, uint8_t *rgb, VJFrame *f )
{
histogram_t *h = (histogram_t*) his;
@@ -2067,3 +2092,62 @@ uint8_t veejay_component_labeling_8(int w, int h, uint8_t *I , uint32_t *M,
return n_labels;
}
void vje_mean_filter( const uint8_t *src, uint8_t *dst, const int w, const int h )
{
const int len = w * h;
unsigned int x,y;
const int aw = w - 1;
for( y = w; y < len; y += w )
{
for(x = 1; x < aw; x++ )
{
dst[x+y] = (
src[x - 1 + y - w ] +
src[x + y - w ] +
src[x + 1 + y - w ] +
src[x - 1 + y ] +
src[x + y] +
src[x + 1 + y ] +
src[x - 1 + y + w ] +
src[x + y + w] +
src[x + 1 + y + w ] ) / 9;
}
}
}
void vje_weighted_average_bin( const uint8_t *src, uint8_t *dst, const int w, const int h )
{
const int len = w * h;
unsigned int x,y;
const int aw = w - 1;
/* 1 2 1
* 2 4 2
* 1 2 1
*/
for( y = w; y < len; y += w )
{
for(x = 1; x < aw; x++ )
{
if( src[x+y] > 0 ) {
dst[x+y] = (
src[x - 1 + y - w ] +
(2* src[x + y - w ]) +
src[x + 1 + y - w ] +
(2*src[x - 1 + y ]) +
(4*src[x + y]) +
(2*src[x + 1 + y ]) +
src[x - 1 + y + w ] +
(2*src[x + y + w]) +
src[x + 1 + y + w ] ) / 16;
}
else {
dst[x+y] = 0;
}
}
}
}