> -----Original Message----- > From: Guo, Yejun <yejun....@intel.com> > Sent: 2021年2月19日 15:00 > To: ffmpeg-devel@ffmpeg.org > Cc: Guo, Yejun <yejun....@intel.com> > Subject: [PATCH 4/4] libavfilter: add filter dnn_detect for object detection > > Below are the example steps to do object detection: > > 1. download and install l_openvino_toolkit_p_2021.1.110.tgz from > https://software.intel.com/content/www/us/en/develop/tools/openvino-toolk > it/download.html > or, we can get source code (tag 2021.1), build and install. > 2. export LD_LIBRARY_PATH with openvino settings, for example: > .../deployment_tools/inference_engine/lib/intel64/:.../deployment_tools/infer > ence_engine/external/tbb/lib/ > 3. rebuild ffmpeg from source code with configure option: > --enable-libopenvino > --extra-cflags='-I.../deployment_tools/inference_engine/include/' > --extra-ldflags='-L.../deployment_tools/inference_engine/lib/intel64' > 4. download model files and test image > wget > https://github.com/guoyejun/ffmpeg_dnn/raw/main/models/openvino/2021. > 1/face-detection-adas-0001.bin > wget > https://github.com/guoyejun/ffmpeg_dnn/raw/main/models/openvino/2021. > 1/face-detection-adas-0001.xml > wget > https://github.com/guoyejun/ffmpeg_dnn/raw/main/models/openvino/2021. > 1/face-detection-adas-0001.label > wget https://github.com/guoyejun/ffmpeg_dnn/raw/main/images/cici.jpg > 5. run ffmpeg with: > ./ffmpeg -i cici.jpg -vf > dnn_detect=dnn_backend=openvino:model=face-detection-adas-0001.xml:inp > ut=data:output=detection_out:confidence=0.6:labels=face-detection-adas-000 > 1.label,showinfo -f null - > > We'll see the detect result as below: > [Parsed_showinfo_1 @ 0x55817e43ce40] side data - bounding boxes: > [Parsed_showinfo_1 @ 0x55817e43ce40] source: > face-detection-adas-0001.xml > [Parsed_showinfo_1 @ 0x55817e43ce40] index: 0, region: (1005, 813) -> > (1086, 905), label: face, confidence: 10000/10000. > [Parsed_showinfo_1 @ 0x55817e43ce40] index: 1, region: (888, 839) -> (967, > 926), label: face, confidence: 6917/10000. > > There are two faces detected with confidence 100% and 69.17%. > > Signed-off-by: Guo, Yejun <yejun....@intel.com> > --- > configure | 1 + > doc/filters.texi | 40 +++ > libavfilter/Makefile | 1 + > libavfilter/allfilters.c | 1 + > libavfilter/dnn/dnn_backend_openvino.c | 12 + > libavfilter/dnn_filter_common.c | 7 + > libavfilter/dnn_filter_common.h | 1 + > libavfilter/dnn_interface.h | 6 +- > libavfilter/vf_dnn_detect.c | 425 > +++++++++++++++++++++++++ > 9 files changed, 492 insertions(+), 2 deletions(-) create mode 100644 > libavfilter/vf_dnn_detect.c > > +static int read_detect_label_file(AVFilterContext *context) { > + int line_len; > + FILE *file; > + DnnDetectContext *ctx = context->priv; > + > + file = av_fopen_utf8(ctx->labels_filename, "r"); > + if (!file){ > + av_log(context, AV_LOG_ERROR, "failed to open file %s\n", > ctx->labels_filename); > + return AVERROR(EINVAL); > + } > + > + while (!feof(file)) { > + char *label; > + char buf[256]; > + fgets(buf, 256, file);
A build warning is caught by patchwork, I could not see the warning log, and my local machine did not report the warning, I think the warning should be that the return value of fgets is not checked, will fix and send out V2, thanks. _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".