Spatial-filtering-of-the-image

对SWAN输出文件进行数据处理及图像输出(SWAN output file, data processing and image output)

品质因子可调的离散小波变换工具箱，可通过参数灵活控制小波函数的频域窗宽(Discrete wavelet transform toolbox with quality factor adjustable, flexible control parameters through the wavelet function in the frequency domain window width)

说明：  基于python-opencv的图像匹配代码，包含了SIFT、SURF、AKAZE、ORB方法。43-48行修改图像路径，74-81修改匹配方法。(dev: python3.6+opencv_python==3.4.2+opencv-contrib-python==3.4.2)

自行编写的逆投影变换，可实现图像坐标系到世界坐标系的转换，从实现鸟瞰变换。(the IPM ,which is completed by me, is able to achieve the transformation between the image coordinates and world coordinates )

说明：  包含多个函数，可直接调用（需按注释输入参数），对ppm和pgm文件，读、写和多种图像处理。(Ppm and pgm file for reading and writing, and various image processing)

高精度亚像素全局运动估计的上采样梯度互相关算法(Precision subpixel global motion estimation on sampling the gradient of cross-correlation algorithm)

说明：  模拟脉冲串回波信号（脉冲周期1ms），快时间匹配滤波，慢时间MTD，提取目标的距离-速度信息；(The echo signal of analog pulse train (pulse period 1ms), fast time matched filtering, slow time MTD, extracting the range velocity information of the target;)

求取一幅二值图像包含目标区域的最小矩形框，返回矩形框的上下左右边界，然后根据边界坐标在图上画出目标区域。(Strike the rectangle that contains the smallest rectangular target area in a binary image, return to the top and bottom rectangular box around the border, and then draw the boundary on the map coordinates of the target area.)

GFT图片格式转换源码，程序根据腾讯皮肤GFT图片的格式，进行字节集的操作实现GFT图片的转换。(GFT image format conversion source code , the program according to Tencent skin GFT picture format operation byte set to achieve GFT image conversion.)

基于matlab的图像小波融合测试程序，选取四副位图文件为对比(Matlab wavelet-based image fusion test program)