腾讯云 赵军 FFmpeg 硬件加速

2020-03-01 302浏览

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  • 12.f W&. Crop, Object Object Object Scale, Tracking Tracking Tracking CSC Full resolution Decode Scale, CSC Object Detection ROI coordinates Object Object Object Object Tracking Tracking Tracking Tracking • Up to 30fps • Up to 4K • Typically FHD/HD • Mostly H.264 • HEVC demand on the rise • Input could be raw video • Scale to match NN input res. • CSC to planar RGB/BGR • Optional Crop (e.g. 1 camera across multiple lanes) • E.g. SSD/Yolo/YoloTi ny • Potentially dozens of objects/frame • Usually every Nth frame (1 < N < 6) • Worst-case N=1 • Optional • Kalman Filters • CAMShift Store meta data Object Object Object Object Tracking Tracking Tracking Classification Composi tion Display Encode Full resolution • Multiple instances • Several per detected object (or subset of) • Crop ROI coordinates • Scale to NN input resolution • CSC to planar RGB/BGR • ResNet, FaceNet, DenseNet, GoogLeNet • E.g. Vehicle type/brand/model • Optional • Draw bounding box(es), text • • • • Optional H.264 today HEVC needed Further VQ loss not acceptable
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