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Code Issues Releases Activity

libavfilter/vf_dnn_detect: Add two outputs ssd support

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For this kind of model, we can directly use its output as final result
just like ssd model. The difference is that it splits output into two
tensors. [x_min, y_min, x_max, y_max, confidence] and [lable_id].

Model example refer to: https://github.com/openvinotoolkit/open_model_zoo/tree/master/models/intel/person-detection-0106

Signed-off-by: Wenbin Chen <wenbin.chen@intel.com>
Reviewed-by: Guo Yejun <yejun.guo@intel.com>
This commit is contained in:
Wenbin Chen 2023-12-27 12:16:58 +08:00 committed by Guo Yejun
parent 86435582a6
commit 56c5930ec3
1 changed files with 49 additions and 13 deletions
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62
libavfilter/vf_dnn_detect.c
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@ -359,24 +359,48 @@ static int dnn_detect_post_proc_yolov3(AVFrame *frame, DNNData *output,
return 0;
}
static int dnn_detect_post_proc_ssd(AVFrame *frame, DNNData *output, AVFilterContext *filter_ctx)
static int dnn_detect_post_proc_ssd(AVFrame *frame, DNNData *output, int nb_outputs,
AVFilterContext *filter_ctx)
{
DnnDetectContext *ctx = filter_ctx->priv;
float conf_threshold = ctx->confidence;
int proposal_count = output->height;
int detect_size = output->width;
float *detections = output->data;
int proposal_count = 0;
int detect_size = 0;
float *detections = NULL, *labels = NULL;
int nb_bboxes = 0;
AVDetectionBBoxHeader *header;
AVDetectionBBox *bbox;
int scale_w = ctx->scale_width;
int scale_h = ctx->scale_height;
if (output->width != 7) {
if (nb_outputs == 1 && output->width == 7) {
proposal_count = output->height;
detect_size = output->width;
detections = output->data;
} else if (nb_outputs == 2 && output[0].width == 5) {
proposal_count = output[0].height;
detect_size = output[0].width;
detections = output[0].data;
labels = output[1].data;
} else if (nb_outputs == 2 && output[1].width == 5) {
proposal_count = output[1].height;
detect_size = output[1].width;
detections = output[1].data;
labels = output[0].data;
} else {
av_log(filter_ctx, AV_LOG_ERROR, "Model output shape doesn't match ssd requirement.\n");
return AVERROR(EINVAL);
}
if (proposal_count == 0)
return 0;
for (int i = 0; i < proposal_count; ++i) {
float conf = detections[i * detect_size + 2];
float conf;
if (nb_outputs == 1)
conf = detections[i * detect_size + 2];
else
conf = detections[i * detect_size + 4];
if (conf < conf_threshold) {
continue;
}
@ -398,12 +422,24 @@ static int dnn_detect_post_proc_ssd(AVFrame *frame, DNNData *output, AVFilterCon
for (int i = 0; i < proposal_count; ++i) {
int av_unused image_id = (int)detections[i * detect_size + 0];
int label_id = (int)detections[i * detect_size + 1];
float conf = detections[i * detect_size + 2];
float x0 = detections[i * detect_size + 3];
float y0 = detections[i * detect_size + 4];
float x1 = detections[i * detect_size + 5];
float y1 = detections[i * detect_size + 6];
int label_id;
float conf, x0, y0, x1, y1;
if (nb_outputs == 1) {
label_id = (int)detections[i * detect_size + 1];
conf = detections[i * detect_size + 2];
x0 = detections[i * detect_size + 3];
y0 = detections[i * detect_size + 4];
x1 = detections[i * detect_size + 5];
y1 = detections[i * detect_size + 6];
} else {
label_id = (int)labels[i];
x0 = detections[i * detect_size] / scale_w;
y0 = detections[i * detect_size + 1] / scale_h;
x1 = detections[i * detect_size + 2] / scale_w;
y1 = detections[i * detect_size + 3] / scale_h;
conf = detections[i * detect_size + 4];
}
if (conf < conf_threshold) {
continue;
@ -447,7 +483,7 @@ static int dnn_detect_post_proc_ov(AVFrame *frame, DNNData *output, int nb_outpu
switch (ctx->model_type) {
case DDMT_SSD:
ret = dnn_detect_post_proc_ssd(frame, output, filter_ctx);
ret = dnn_detect_post_proc_ssd(frame, output, nb_outputs, filter_ctx);
if (ret < 0)
return ret;
break;