/// <summary> /// Convert an input array to texture 2D /// </summary> /// <param name="image">The input image, if 3 channel, we assume it is Bgr, if 4 channels, we assume it is Bgra</param> /// <param name="flipType"></param> /// <param name="buffer">Optional buffer for the texture conversion, should be big enough to hold the image data. e.g. width*height*pixel_size</param> /// <returns>The texture 2D</returns> public static Texture2D InputArrayToTexture2D(IInputArray image, Emgu.CV.CvEnum.FlipType flipType = FlipType.Vertical, byte[] buffer = null) { using (InputArray iaImage = image.GetInputArray()) { Size size = iaImage.GetSize(); if (iaImage.GetChannels() == 3 && iaImage.GetDepth() == DepthType.Cv8U && SystemInfo.SupportsTextureFormat(TextureFormat.RGB24)) { //assuming 3 channel image is of BGR color Texture2D texture = new Texture2D(size.Width, size.Height, TextureFormat.RGB24, false); byte[] data; int bufferLength = size.Width * size.Height * 3; if (buffer != null) { if (buffer.Length < bufferLength) { throw new ArgumentException(String.Format("Buffer size ({0}) is not big enough for the RBG24 texture, width * height * 3 = {1} is required.", buffer.Length, bufferLength)); } data = buffer; } else { data = new byte[bufferLength]; } GCHandle dataHandle = GCHandle.Alloc(data, GCHandleType.Pinned); using ( Image <Rgb, byte> rgb = new Image <Rgb, byte>(size.Width, size.Height, size.Width * 3, dataHandle.AddrOfPinnedObject())) { rgb.ConvertFrom(image); if (flipType != FlipType.None) { CvInvoke.Flip(rgb, rgb, flipType); } } dataHandle.Free(); texture.LoadRawTextureData(data); texture.Apply(); return(texture); } else if (SystemInfo.SupportsTextureFormat(TextureFormat.RGBA32)) { Texture2D texture = new Texture2D(size.Width, size.Height, TextureFormat.RGBA32, false); byte[] data; int bufferLength = size.Width * size.Height * 4; if (buffer != null) { if (buffer.Length < bufferLength) { throw new ArgumentException( String.Format( "Buffer size ({0}) is not big enough for the RGBA32 texture, width * height * 4 = {1} is required.", buffer.Length, bufferLength)); } data = buffer; } else { data = new byte[bufferLength]; } GCHandle dataHandle = GCHandle.Alloc(data, GCHandleType.Pinned); using ( Image <Rgba, byte> rgba = new Image <Rgba, byte>(size.Width, size.Height, size.Width * 4, dataHandle.AddrOfPinnedObject())) { rgba.ConvertFrom(image); if (flipType != FlipType.None) { CvInvoke.Flip(rgba, rgba, flipType); } } dataHandle.Free(); texture.LoadRawTextureData(data); texture.Apply(); return(texture); } else { throw new Exception("TextureFormat of RGBA32 is not supported on this device"); } } }