无法识别文件“Lenna.jpg”的格式在抛出“cimg_library::CImgIOException”实例后调用终止

编程问答 2022-05-23

问题描述

当我运行 Cimg 程序的这个输出时，我收到这条消息

#include "CImg.h"
using namespace cimg_library;

int main(int argc,char * argv[]) {

    const char * input_file = "Lenna.jpg";

    CImg<unsigned char> * input = new CImg<unsigned char>(input_file);

    CImgList<unsigned char> fft = input->get_FFT();
    CImg<unsigned char>::FFT(fft[0],fft[1],false);
    fft[0].save("fft.jpg");

    return 1;
}

我最初得到的是一张空白图像。但后来我安装了 ImageMagick。之后，当我运行输出时，我收到此消息：

convert: no decode delegate for this image format `JPG' @ error/constitute.c/ReadImage/572.
convert: no images defined `pnm:-' @ error/convert.c/ConvertimageCommand/3304.
convert: no decode delegate for this image format `JPG' @ error/constitute.c/ReadImage/572.
convert: no images defined `pnm:-' @ error/convert.c/ConvertimageCommand/3304.
convert: no decode delegate for this image format `JPG' @ error/constitute.c/ReadImage/572.
convert: no images defined `pnm:-' @ error/convert.c/ConvertimageCommand/3304.

[CImg] *** CImgIOException *** [instance(0,(nil),non-shared)] CImg<unsigned char>::load(): @R_404_4761@ to recognize format of file 'Lenna.jpg'.
terminate called after throwing an instance of 'cimg_library::CImgIOException'
  what():  [instance(0,non-shared)] CImg<unsigned char>::load(): @R_404_4761@ to recognize format of file 'Lenna.jpg'.
Aborted (core dumped)

不确定这是什么。

解决方法

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c++cimgimage-processinglinuxlinux