int motionDetection(MotionDetect* md, Transform* trans, unsigned char *frame) {
assert(md->initialized==2);
md->currorig = frame;
// smoothen image to do better motion detection
// (larger stepsize or eventually gradient descent (need higher resolution)
if (isRGB(md->fi.pFormat)) {
// we could calculate a grayscale version and use the YUV stuff afterwards
// so far only YUV implemented
memcpy(md->curr, frame, md->fi.framesize);
} else {
// box-kernel smoothing (plain average of pixels), which is fine for us
boxblurYUV(md->curr, frame, md->currtmp, &md->fi, md->stepSize*1/*1.4*/,
BoxBlurNoColor);
// two times yields tent-kernel smoothing, which may be better, but I don't
// think we need it
//boxblurYUV(md->curr, md->curr, md->currtmp, &md->fi, md->stepSize*1,
// BoxBlurNoColor);
}
if (md->hasSeenOneFrame) {
// md->curr = frame;
if (isRGB(md->fi.pFormat)) {
if (md->algo == 0)
*trans = calcShiftRGBSimple(md);
else if (md->algo == 1)
*trans = calcTransFields(md, calcFieldTransRGB, contrastSubImgRGB);
} else if (md->fi.pFormat == PF_YUV) {
if (md->algo == 0)
*trans = calcShiftYUVSimple(md);
else if (md->algo == 1)
*trans = calcTransFields(md, calcFieldTransYUV, contrastSubImgYUV);
} else {
ds_log_warn(md->modName, "unsupported Pixel Format (Codec: %i)\n",
md->fi.pFormat);
return DS_ERROR;
}
} else {
md->hasSeenOneFrame = 1;
*trans = null_transform();
}
// copy current frame (smoothed) to prev for next frame comparison
memcpy(md->prev, md->curr, md->fi.framesize);
md->frameNum++;
return DS_OK;
}
int vsMotionDetection(VSMotionDetect* md, LocalMotions* motions, VSFrame *frame) {
assert(md->initialized==2);
md->currorig = *frame;
// smoothen image to do better motion detection
// (larger stepsize or eventually gradient descent (need higher resolution))
if (md->fi.pFormat > PF_PACKED) {
// we could calculate a grayscale version and use the PLANAR stuff afterwards
// so far smoothing is only implemented for PLANAR
vsFrameCopy(&md->curr, frame, &md->fi);
} else {
// box-kernel smoothing (plain average of pixels), which is fine for us
boxblurPlanar(&md->curr, frame, &md->currtmp, &md->fi, md->conf.stepSize*1/*1.4*/,
BoxBlurNoColor);
// two times yields tent-kernel smoothing, which may be better, but I don't
// think we need it
//boxblurPlanar(md->curr, md->curr, md->currtmp, &md->fi, md->stepSize*1,
// BoxBlurNoColor);
}
if (md->hasSeenOneFrame) {
LocalMotions motionscoarse;
LocalMotions motionsfine;
vs_vector_init(&motionsfine,0);
// md->curr = frame;
if (md->fi.pFormat > PF_PACKED) {
motionscoarse = calcTransFields(md, &md->fieldscoarse,
calcFieldTransPacked, contrastSubImgPacked);
} else { // PLANAR
motionscoarse = calcTransFields(md, &md->fieldscoarse,
calcFieldTransPlanar, contrastSubImgPlanar);
}
int num_motions = vs_vector_size(&motionscoarse);
if (num_motions < 1) {
vs_log_warn(md->conf.modName, "too low contrast. \
(no translations are detected in frame %i)\n", md->frameNum);
}else{
