Squirrowse/Squirrowse.Core/Services/ImgExtensions.cs

using System.Linq;
using OpenCvSharp;

namespace Squirrowse.Core.Services
{
    public static class ImgExtensions
    {
        public static byte[] ConvertToJpgByte(this Mat mat)
        {
            Cv2.ImEncode(".jpg", mat, out var imgbuffer); //no need to dispose
            return imgbuffer.Any() ? imgbuffer : new byte[] { };
        }

        public static Mat ConvertByteToMat(this byte[] bytearr)
        {
            var tempMat = Cv2.ImDecode(bytearr, ImreadModes.Unchanged); //keep as disposable
            return tempMat ?? new Mat();
        }
    }
}