未指定的错误找不到writer [英] Unspecified error could not find a writer

问题描述

我试图从

命令行参数

路径

  //命令行选项
 printf （长期权的强制性参数对于短期期权也是强制性的。 
 printf（-i，--input = PATH设置输入图像的路径\\\
）; 
 printf（（* .jpg，* .png等）\\\
）; 
 printf（-o，--output = PATH设置输出图像的路径\\\
）; 
 printf（（* .jpg，* .png等）\\\
）; 
 printf（-m，--minsize = SIZE设置an \\\
的最小大小（以像素为单位））; 
 printf（object（default is 128）\\\
）; 
 printf（-M，--maxsize = SIZE设置an \\\
的最大大小（以像素为单位））; 
 printf（object（default is 1024）\\\
）; 
 printf（-a，--angle = ANGLE cascade rotation angle：\\\
）; 
 printf（0.0是0弧度，1.0是2 * pi弧度\\\
）; 
 printf（（default is 0.0）\\\
）; 
 printf（-q，-qthreshold = THRESH检测质量阈值（> = 0.0）：\\\
）; 
 printf（all detections with estimated quality\\\
）; 
 printf（低于此阈值将被丢弃\\\
）; 
 printf（（default is 5.0）\\\
）; 
 printf（-c，--scalefactor = SCALE在\\\
期间重新缩放窗口的大小）; 
 printf（multiscale detection process（default is 1.1）\\\
）; 
 printf（-t，--stridefactor = STRIDE多少移动窗口在adjacent\\\
之间）; 
 printf（detections（default is 0.1，ie，10 %%）\\\
）; 
 printf（-u，--usepyr打开粗图像金字塔支持\\\
）; 
 printf（-n，--noclustering关闭检测聚类\\\
）; 
 printf（-v，--verbose检测进程的打印详细信息\\\
）; 
 printf（to`stdout`\\\
）; 
 
 // 
 printf（退出状态：\\\
）; 
 printf（0如果OK，\\\
）; 
 printf（1如果麻烦（例如，输入图像的无效路径）.\\\
）; 
  

我的整体参数

  E：\\pico-master \\rnt\\cascades\\facefinder -i E：\\1.jpg -o E：\\  - m 128 -M 1024 -a 0.0 -q 5.0 -c 1.1 -t 0.1 
  

解决方案

OpenCV 无法找到写入者将图片写入磁盘，因为您未在 -o 选项。

使用 -o path_to_image 保存输出图像，例如：

  -o E：\\img.jpg 
  

I am trying to run and check a sample program from here and executing its sample.c. I am giving its argument, first is the path to facefinder, second is input image, third is output image and so on. But when i give all the paths, it show me following error and close. I am using Visual studio 2015 and opencv 2.4.10

Error:

Command line argument

Paths

// command line options
        printf("Mandatory arguments to long options are mandatory for short options too.\n");
        printf("  -i,  --input=PATH          set the path to the input image\n");
        printf("                               (*.jpg, *.png, etc.)\n");
        printf("  -o,  --output=PATH         set the path to the output image\n");
        printf("                               (*.jpg, *.png, etc.)\n");
        printf("  -m,  --minsize=SIZE        sets the minimum size (in pixels) of an\n");
        printf("                               object (default is 128)\n");
        printf("  -M,  --maxsize=SIZE        sets the maximum size (in pixels) of an\n");
        printf("                               object (default is 1024)\n");
        printf("  -a,  --angle=ANGLE         cascade rotation angle:\n");
        printf("                               0.0 is 0 radians and 1.0 is 2*pi radians\n");
        printf("                               (default is 0.0)\n");
        printf("  -q,  --qthreshold=THRESH   detection quality threshold (>=0.0):\n");
        printf("                               all detections with estimated quality\n");
        printf("                               below this threshold will be discarded\n");
        printf("                               (default is 5.0)\n");
        printf("  -c,  --scalefactor=SCALE   how much to rescale the window during the\n");
        printf("                               multiscale detection process (default is 1.1)\n");
        printf("  -t,  --stridefactor=STRIDE how much to move the window between neighboring\n");
        printf("                               detections (default is 0.1, i.e., 10%%)\n");
        printf("  -u,  --usepyr              turns on the coarse image pyramid support\n");
        printf("  -n,  --noclustering        turns off detection clustering\n");
        printf("  -v,  --verbose             print details of the detection process\n");
        printf("                               to `stdout`\n");

        //
        printf("Exit status:\n");
        printf(" 0 if OK,\n");
        printf(" 1 if trouble (e.g., invalid path to input image).\n");

my overall argument

E:\\pico-master\\rnt\\cascades\\facefinder -i E:\\1.jpg -o E:\\ -m 128 -M 1024 -a 0.0 -q 5.0 -c 1.1 -t 0.1

解决方案

OpenCV could not find a writer to write the image to disk because you didn't specify an image path in the -o option.

Use -o path_to_image to save the output image, e.g.:

-o E:\\img.jpg

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