using OpenCvSharp;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Vision.Recognition.Helper.OpenCv
{
    public class ResizeHelper
    {

        /// <summary>
        /// 等比放大的
        /// </summary>
        /// <param name="src"></param>
        /// <param name="scale"></param>
        /// <returns></returns>
        public static Mat Resize(Mat src, double scale)
        {
            if (Math.Abs(scale - 1) < 0.00001)
            {
                return Resize(src, scale, scale);
            }
            return src;
        }

        public static Mat Resize(Mat src, double widthScale, double heightScale)
        {
            if (Math.Abs(widthScale - 1) < 0.00001 || Math.Abs(heightScale - 1) < 0.00001)
            {
                var dst = new Mat();
                Cv2.Resize(src, dst, new Size(src.Width * widthScale, src.Height * heightScale));
                return dst;
            }
            return src;
        }
    }
}