图像梯度计算: Sobel算子等图像梯度计算方法在边界处也常需要边界填充。 4. 边界填充的实际代码示例 我们通过一个实际的代码示例来演示如何在 OpenCV 中使用边界填充方法。假设我们有一幅灰度图像,并希望在图像的边界处进行不同类型的填充。 原图如下:(example.jpg) import cv2 import numpy as np import matplotlib...
void buildGaussianPyramid() {//金字塔内容为每一层的掩模 assert(leftLapPyr.size()>0); maskGaussianPyramid.clear(); Mat currentImg; cvtColor(blendMask, currentImg, CV_GRAY2BGR);//store color img of blend mask into maskGaussianPyramid maskGaussianPyramid.push_back(currentImg); //0-level curren...
X:\Program Files (x86)\opencv2.4.3\opencv\build\include\opencv X:\Program Files (x86)\opencv2.4.3\opencv\build\include\opencv2 再在VC++目录|库目录加入一条路径: X:\Program Files (x86)\opencv2.4.3\opencv\build\x86\vc10\lib 项目|右键|Properties|Linker|Input|Additional Dependencies中加入: De...
upsamples and smoothes the imageCV_EXPORTS_WvoidpyrUp( InputArray src, OutputArray dst,constSize& dstsize=Size(),intborderType=BORDER_DEFAULT );//! builds the gaussian pyramid using pyrDown() as a basic operationCV_EXPORTSvoidbuildPyramid( InputArray src, OutputArrayOfArrays dst,intmaxlevel,int...
prevImg:第一帧8位输入图像,或buildOpticalFlowPyramid构建的Pyramid; nextImg:第二帧输入图像或Pyramid,且与第一帧格式相同; prevPts:光流需要找到的2D点向量;点坐标必须为单精度浮点数 nextPts:计算出的输入特征在第二帧图像中的新位置的2D点向量;
#include<opencv2/core.hpp>#include<opencv2/imgproc.hpp>#include<opencv2/opencv.hpp>usingnamespacestd;usingnamespacecv;// 构建高斯金字塔voidbuildGaussianPyramid(Mat ,vector<Mat>&pyramid,intlevels){Mat temp=image.clone();pyramid.push_back(temp);for(inti=1;i<levels;i++){// 高斯滤波Mat blurr...
(1.1)构建高斯尺度空间金字塔:buildGaussianPyramid() (1.2)构建DOG图像金字塔:buildDoGPyramid() (1.3)查找尺度空间极值即检测关键点:findScaleSpaceExtrema() (1.4)计算描述符:calcDescriptors() 4.1 特征点检测与描述符计算 detectAndCompute() /* * _image 【输入】输入图像 * _mask 【输入】图像掩码 * keypo...
buildDoGPyramid(gpyr, dogpyr); //step3: findScaleSpaceExtrema removeDuplicated 寻找并筛选尺度空间特征值 findScaleSpaceExtrema(gpyr, dogpyr, keypoints); 注意这里将特征值的初略寻找和细化寻找放在了一起(一个循环) 其中 其中二 注意: //step4: calcDescriptors 计算特征值 ...
I wanted to add that segfaults are not always happening. In my program, that I develop, buildPyramid() leaves pyramid uninitialized (when using clang). Setting ocl::setUseOpenCL(false) or using build with OPENCL=OFF - does not make any visible change in behavior, it still segfaults. ...
(base, gpyr, nOctaves);// 构建高斯差分金字塔buildDoGPyramid(gpyr, dogpyr);//t = (double)getTickCount() - t;//printf("pyramid construction time: %g\n", t*1000./tf);// useProvidedKeypoints默认为false// 使用keypoints并计算特征点的描述符if( !useProvidedKeypoints ){...