public DetectResult Detect(byte[] file) { using var frame = Cv2.ImDecode(file, CvLoadImage.Grayscale); if (frame.IsEmpty) { throw new NotSupportedException("This file is not supported!!"); } if (Ncnn.IsSupportVulkan) { Ncnn.CreateGpuInstance(); } using var inMat = Mat.FromPixels(frame.Data, NcnnDotNet.PixelType.Bgr2Rgb, frame.Cols, frame.Rows); var faceInfos = this._UltraFace.Detect(inMat).ToArray(); if (Ncnn.IsSupportVulkan) { Ncnn.DestroyGpuInstance(); } return(new DetectResult(frame.Cols, frame.Rows, faceInfos)); }