2022-07-29 08:41:34 +00:00
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/*
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* ====================================================
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* 功能：折角检测。检测原理：计算纸张的理论四角顶点，到实际轮廓最小距离。当任意顶点到轮廓最小距离超过阈值，则判定为折角
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* 作者：刘丁维
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* 生成时间：2020/10/30
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* 最近修改时间：2020/10/30 v1.0
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* 2021/11/04 v1.1 增加背景抗噪机制，能够抗5像素的背景噪声
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* 2022/07/15 v1.2 增加折角类型判断。区分普通折角，以及扫描不完整导致的折角
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* 2022/07/21 v1.3 区分普通折角和越界折角判定条件。先判定是否为边界越界折角，若是，则报越界折角2；若不是再检测是否为普通折角，若是则报普通折角1。
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* 2022/07/21 v1.3.1 先判定是否为普通折角，若是，则报普通折角1；若不是再检测是否为越界折角，若是则报越界折角2。
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* 2022/07/22 v1.4 增加参数zoom_x,zoom_y。适应原图XY轴DPI不一致的问题。
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* 版本号：v1.4
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* ====================================================
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*/
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#ifndef IMAGE_APPLY_DOGEAR_DETECTION_H
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#define IMAGE_APPLY_DOGEAR_DETECTION_H
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#include "ImageApply.h"
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class GIMGPROC_LIBRARY_API CImageApplyDogEarDetection : public CImageApply
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{
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public:
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/// <summary>
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/// 折角检测默认构造函数，threshold = 40， zoom = 1.0， distance = 50
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/// </summary>
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CImageApplyDogEarDetection();
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/// <summary>
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/// 折角检测构造函数
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/// </summary>
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/// <param name="threshlod">二值化阈值</param>
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/// <param name="zoom_x">原图X轴缩放比例，对于大尺寸图像而言通过zoom缩小图像可减少计算量。默认值1.0（不缩放）</param>
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/// <param name="zoom_y">原图Y轴缩放比例，对于大尺寸图像而言通过zoom缩小图像可减少计算量。默认值1.0（不缩放）</param>
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/// <param name="distance">理论顶点到实际轮廓最小距离的阈值，大于该阈值则判定为折角，默认值50（像素）</param>
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CImageApplyDogEarDetection(double threshlod, double zoom_x = 1.0, double zoom_y = 1.0, double distance1 = 50, double distance2 = 50);
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virtual ~CImageApplyDogEarDetection(void);
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/// <summary>
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/// 获取检测结果。该函数须在调用apply之后使用。
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/// </summary>
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/// <returns>0为非折角；1为普通折角；2为可能是扫描不完整造成的折角</returns>
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inline int getResult() { return m_result; }
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virtual void apply(cv::Mat& pDib, int side);
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private:
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virtual void apply(std::vector<cv::Mat>& mats, bool isTwoSide);
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private:
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double m_threshold;
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double m_zoom_x;
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double m_zoom_y;
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double m_distance1;
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double m_distance2;
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int m_result;
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};
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#endif // IMAGE_APPLY_DOGEAR_DETECTION_H
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