WingAIDiagnosisService/Carotid/Utilities/ImageCrop.cs

using System;
using System.Collections.Generic;
using Emgu.CV;
using Emgu.CV.Structure;
using System.Drawing;
using WingServerCommon.Log;
using WingAIDiagnosisService.Carotid.CarotidInterFacesData;
using WingAIDiagnosisService.Carotid.MathTools;
using WingAIDiagnosisService.Carotid.Utilities.DetectIntima;
using Vinno.vCloud.Common.Vid2;
using Vinno.vCloud.Common.Vid2.Visuals;
using System.Linq;

namespace WingAIDiagnosisService.Carotid.Utilities
{
    public class ImageCrop
    {
        //获取图像在物理坐标下的有效宽度(除去黑色背景区域)
        public static float GetPhysicalWidth(VinnoImage vinnoImage)
        {
            if (vinnoImage.Visuals.First() is Vinno2DVisual visual)
            {
                if (visual.PhysicalCoordinates.ContainsKey(VinnoVisualAreaType.Tissue))
                {
                    var physicalCoordinate = visual.PhysicalCoordinates[VinnoVisualAreaType.Tissue];
                    if (physicalCoordinate is VinnoTissuePhysicalCoordinate coordinate)
                        return (float)(coordinate.Width);
                }
            }

            return 0;
        }

        //通过VID文件的属性计算图像在像素坐标下的有效区域的坐标
        public static ImageEdge CropImageByInfo(Mat mat, VinnoImage vinnoImage, float scanDepth)
        {
            //裁剪黑色背景之前图像的宽，像素单位
            int imgWidth0 = mat.Width;
            //图像的高，像素单位
            int imgHeight = mat.Height;
            ImageEdge edge = new ImageEdge(imgWidth0, imgHeight);
            //图像的宽，物理单位，厘米
            float physicalWidth = GetPhysicalWidth(vinnoImage);
            //单位像素的物理距离
            float cmPerPix = scanDepth / imgHeight;
            //裁剪黑色背景后图像的有效宽度，像素单位
            int imgWidth = (int) (physicalWidth / cmPerPix);
            edge.Left = (imgWidth0 - imgWidth) / 2;
            edge.Right = edge.Left + imgWidth;

            ///把裁剪后的图像宽度调整为 4的倍数
            ImageEdgeDetector.AdjustEdge(edge);
            //reset if not valid
            if (!edge.IsValid)
            {
                edge.Left = 0;
                edge.Right = mat.Width - 1;
                return edge;
            }
            return edge;
        }

    }
}