cimg | 易学教程

editor.md实现拖拽剪切复制粘贴上传图片,文件插件

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editor.md作为一款Markdown编辑器,界面美观,功能强大但是图片,文件上传方面缺少了剪切,拖拽上传,有那么一点每中不足，下面就简单实现一个，废话不多说,直接上代码。 uploadImg.js function initPasteDragImg(Editor){ var doc = document.getElementById(Editor.id) doc.addEventListener('paste', function (event) { var items = (event.clipboardData || window.clipboardData).items; var file = null; if (items && items.length) { // 搜索剪切板items for (var i = 0; i < items.length; i++) { if (items[i].type.indexOf('image') !== -1) { file = items[i].getAsFile(); break; } } } else { console.log("当前浏览器不支持"); return; } if (!file) { console.log("粘贴内容非图片"); return; } uploadImg(file,Editor); })

C++ CImg Access violation reading location

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问题 I currently try to learn how to use the CImg library but I get an error that I do not quite understand. The documentation of the constructors in the CImg library were also rather unhelpful. The basic idea is that I want to create an image so that I can write the pixels in a second step (not shown) manually. However, the access to the image created with the CImg constructor is denied for some reason. Here is a minimal example: #include <iostream> #include <CImg.h> #include "Header.h" using

spectral residual saliency detection in C++ with CImg

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问题 I'm trying to implement the spectral residual approach for saliency detection, described in this paper: http://www.klab.caltech.edu/~xhou/papers/cvpr07.pdf There is a reference implementation in Matlab Code, taken from their website: http://www.klab.caltech.edu/~xhou/projects/spectralResidual/spectralresidual.html clear clc %% Read image from file inImg = im2double(rgb2gray(imread('yourImage.jpg'))); inImg = imresize(inImg, 64/size(inImg, 2)); %% Spectral Residual myFFT = fft2(inImg);

ITK Importing Image Data from a Buffer

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问题 I have coded a method to create an Itk image from a buffer (in my case it's a Cimg image type). This is the algorithme : void Cimg_To_ITK (CImg<uchar> img) { const unsigned int Dimension = 2; typedef itk::RGBPixel< unsigned char > RGBPixelType; typedef itk::Image< RGBPixelType, Dimension > RGBImageType; typedef itk::ImportImageFilter< RGBPixelType, Dimension > ImportFilterType; ImportFilterType::Pointer importFilter = ImportFilterType::New(); typedef itk::ImageFileWriter< RGBImageType >

ITK Importing Image Data from a Buffer

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CImg failed to recognize the format “jpeg”

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问题 To load image, I installed the CImg library in my mac(OSX 10.10). Luckily I managed to display the bmp picture, but I failed to load and display other formats like png or jpg. Then I installed the ImageMagic which is downloaded from http://cactuslab.com/imagemagick/ and then run the program. The errors are still there. My code is : #include "CImg.h" #include <stdlib.h> #define cimg_use_magick using namespace cimg_library; int main() { CImg<unsigned char> image("lena.jpg"); image.display();

CImg library creates distorted images on rotation

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问题 I want to use the CImg library (http://cimg.sourceforge.net/) to rotate an image with an arbitrary angle (the image is read by Qt which should not perform the rotation): QImage img("sample_with_alpha.png"); img = img.convertToFormat(QImage::Format_ARGB32); float angle = 45; cimg_library::CImg<uint8_t> src(img.bits(), img.width(), img.height(), 1, 4); cimg_library::CImg<uint8_t> out = src.get_rotate(angle); // Further processing: // Data: out.data(), out.width(), out.height(), Stride: out

cimg library - linking error [closed]

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问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 4 years ago . I try to use the cimg library. I have included the CImg.h-header file. But when I try to compile it, I get a linking error. /tmp/cc2tvYsW.o: In function `cimg_library::cimg::Mutex_info::trylock(unsigned int)': tafelbilder.cpp:(.text._ZN12cimg_library4cimg10Mutex_info7trylockEj[_ZN12cimg_library4cimg10Mutex

Compilation errors with CImg

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问题 I am using the CImg library for the first time and I get compilation errors with a simple test program that just includes CImg.h. Why is that? How can I fix this? Program code: #include "../headers/CImg.h" using namespace cimg_library; int main() { return 0; } Compilation errors: In function 'FILE* cimg_library::cimg::fopen(const char*, const char*)': 5065|error: '_fileno' was not declared in this scope In function 'int cimg_library::cimg::fseek(FILE*, INT_PTR, int)': 5093|error: '_fseeki64'

Display several images using CImg class on C++

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问题 How can one display several images of cards (52 cards) into a 'grid'? I am trying to create four piles in the upper left corner, four piles in the upper right corner, eight piles that make up the main table for my game with the use of CImg class. 回答1: Updated Answer You can use append() like this: #include "CImg.h" using namespace cimg_library; int main() { // Load up all images into CImg structures CImg<unsigned char> c7("7.png"); CImg<unsigned char> c9("9.png"); CImg<unsigned char> c4("4