QT+GDAL实现影像的读取和显示

详细流程参考https://blog.csdn.net/deirjie/article/details/37872743

代码

//open_image.h
#pragma once
#include <QtWidgets/QMainWindow>
#include "ui_open_image.h"
#include "gdal_priv.h"
#include <QMessageBox>
#include <QFileDialog>
#include <QTextCodec>
#include<QWheelEvent>
#include<QStandardItemModel>
#include<QFileInfo>
#include<QImage>
#include<QPixmap>
#include<QGraphicsPixmapItem>
#include<QMatrix>
#include<QScrollBar>
#include <QListView>
class open_image : public QMainWindow
{
    Q_OBJECT
		
public slots:
	void readimage();
public:
	QSize sizeHint() const;
	void CloseCurrentImg();
    open_image(QWidget *parent = Q_NULLPTR);
	bool m_showColor;
	float m_scaleFactor;
	QPoint lastEventCursorPos;
protected:
	void wheelEvent(QWheelEvent *event);
	void mousePressEvent(QMouseEvent *event);
	void mouseMoveEvent(QMouseEvent *event);
	void mouseReleaseEvent(QMouseEvent *event);
	void ZoomIn()
	{
		ScaleImg(1.2);
	};
	void ZoomOut()
	{
		ScaleImg(0.8);
	};
private:
	void ShowBand(GDALRasterBand* band);
	void ShowImg(QList<GDALRasterBand*>*imgBand);
	unsigned char* ImgSketch(float* buffer, GDALRasterBand* currentBand, int size, double noValue);
    Ui::open_imageClass ui;
	void ScaleImg(double factor)
	{
		m_scaleFactor *= factor;
		QMatrix matrix;
		matrix.scale(m_scaleFactor, m_scaleFactor);
		ui.image_show->setMatrix(matrix);
	};
	QStandardItemModel *imgMetaModel;
	QStandardItemModel *fileListModel;
	GDALDataset *poDataset;
	void ShowImgInfor(const QString filename);
	void ShowFileList(const QString filename);
};

结果展示

只打开图片的话，没有投影信息

*//工程文件，有需要可以下载，主要是为了备份 用了GDAL+QT+OPENCV（包括有：图像打开，元数据查看，VDVI计算，灰度转换、直方图均衡化，拉普拉斯滤波、高斯滤波、线性拉伸、区域生长分割），还有很多bug没修改------

链接: https://pan.baidu.com/s/1banIbxF6xCcCCEeGrCPJjg?pwd=ten9

提取码: ten9 复制这段内容后打开百度网盘手机App，操作更方便哦

直方图均衡化截图有问题—不知道为啥