mmcv.video.quantize_flow¶ mmcv.video.quantize_flow(flow: numpy.ndarray, max_val: float = 0.02, norm: bool = True) → tuple[source]¶ Quantize flow to [0, 255]. After this step, the size of flow will be much smaller, and can be dumped as jpeg images. Parameters flow (ndarray) – (h, w, 2) array of optical flow. max_val (float) – Maximum value of flow, values beyond [-max_val, max_val] will be truncated. norm (bool) – Whether to divide flow values by image width/height. Returns Quantized dx and dy. Return type tuple[ndarray]