在matlab中读取.yml文件

Question

我想在Matlab中阅读.yml文件.这些文件包含面部图像上关键点的坐标x和y.我寻找不同的工具,但我似乎没有找到任何答案.

我的.yml文件看起来像这样

YAML:1.0
Image file: "00032009.jpg"
Contours count: 8
Contours:
   -
      Name: FO
      Count: 41
      Closed: 0
      Points:
         -
            x: 682.5947265625000000
            y: 743.1998901367187500
         -
            x: 685.9638061523437500
            y: 771.3800659179687500

......

等等

注意00032009.jpg是面部x的图像,y是面部上的点的坐标例如:眼睛的右角等

你能指出一种方法来阅读文件,然后在脸部图像上显示点吗？

编辑1:这是我得到的错误

Error: File: ReadYamlRaw.m Line: 14 Column: 11
Expression or statement is incorrect--possibly unbalanced (, {, or [.
Error in ==> ReadYaml at 38
    ry = ReadYamlRaw(filename, 0, nosuchfileaction);

令人不解的是ReadYamlRaw.m中的第14行

[pth,~,~]= fileparts(mfilename('fullpath'));

 Parse error at ','(second one) and ']' usage appears to be invalid matlab syntax.

那么在那里有什么用途？为什么会有错误？

Edit2:我用虚拟变量替换了上面的〜然后我得到了这个错误O_O

 Error using ==> ReadYamlRaw>scan at 81
Unknown data type: logical

Error in ==> ReadYamlRaw>scan_map at 138
            result.(ich) = scan(r.get(java.lang.String(ich)));

Error in ==> ReadYamlRaw>scan at 79
        result = scan_map(r);

Error in ==> ReadYamlRaw>scan_list at 116
        result{ii} = scan(i);

Error in ==> ReadYamlRaw>scan at 77
        result = scan_list(r);

Error in ==> ReadYamlRaw>scan_map at 138
            result.(ich) = scan(r.get(java.lang.String(ich)));

Error in ==> ReadYamlRaw>scan at 79
        result = scan_map(r);

Error in ==> ReadYamlRaw>load_yaml at 48
        result = scan(yaml.load(fileread([filename, fileext])));

Error in ==> ReadYamlRaw at 19
    result = load_yaml(filename, nosuchfileaction);

Error in ==> ReadYaml at 38
    ry = ReadYamlRaw(filename, 0, nosuchfileaction);

我也试过了一个看起来像这样的不同的yml文件

%YAML:1.0
RE-C:
   x: 919
   y: 580
LE-C:
   x: 1209
   y: 597
N-C:
   x: 1063
   y: 698
FO-B:
   x: 1045
   y: 1114
REL-O:
   x: 852
   y: 597
REL-I:
   x: 986
   y: 600
REL-T:
   x: 918
   y: 564

我收到以下错误

Java exception occurred:
while scanning a directive
 in "<string>", line 1, column 1:
    %YAML:1.0
    ^
expected alphabetic or numeric character, but found :(58)
 in "<string>", line 1, column 6:
    %YAML:1.0
         ^


    at org.yaml.snakeyaml.scanner.ScannerImpl.scanDirectiveName(ScannerImpl.java:1028)

    at org.yaml.snakeyaml.scanner.ScannerImpl.scanDirective(ScannerImpl.java:990)

    at org.yaml.snakeyaml.scanner.ScannerImpl.fetchDirective(ScannerImpl.java:534)

    at org.yaml.snakeyaml.scanner.ScannerImpl.fetchMoreTokens(ScannerImpl.java:251)

    at org.yaml.snakeyaml.scanner.ScannerImpl.checkToken(ScannerImpl.java:179)

    at
    org.yaml.snakeyaml.parser.ParserImpl$ParseImplicitDocumentStart.produce(ParserImpl.java:198)

    at org.yaml.snakeyaml.parser.ParserImpl.peekEvent(ParserImpl.java:161)

    at org.yaml.snakeyaml.parser.ParserImpl.checkEvent(ParserImpl.java:146)

    at org.yaml.snakeyaml.composer.Composer.getSingleNode(Composer.java:105)

    at org.yaml.snakeyaml.constructor.BaseConstructor.getSingleData(BaseConstructor.java:121)

    at org.yaml.snakeyaml.Yaml.loadFromReader(Yaml.java:480)

    at org.yaml.snakeyaml.Yaml.load(Yaml.java:399)


Error in ==> ReadYamlRaw>load_yaml at 48
        result = scan(yaml.load(fileread([filename, fileext])));

Error in ==> ReadYamlRaw at 19
    result = load_yaml(filename, nosuchfileaction);

Error in ==> ReadYaml at 38
    ry = ReadYamlRaw(filename, 0, nosuchfileaction);

也许某人可以用这些东西制作出一些东西,或者你可以指出另一套可行的功能？我搜索了但除了这个之外没有发现任何东西.

Answer 1

它确实是YAML文件(正如@DavidBrown在他的评论中提到的,扩展无关紧要).但它有一些问题.不知道是由于错误的YAML格式还是MATLAB实现.

我安装了YAMLMATLAB并对你的文件稍微玩了一下.

YamlStruct = ReadYaml(yaml_file);

如果文件按原样输入,YAMLMATLAB将返回错误.仅当我对第一行进行注释并从字段名称中删除空格时,它才有效.所以文件的开头看起来像这样:

#YAML:1.0
Imagefile: 00032009.jpg
Contourscount: 8
...skipped the rest...

然后我得到了正确的结构.例如,您可以访问第一个点的x坐标

YamlStruct.Contours{1}.Points{1}.x

ans =

  682.5947

UPDATE

字段名称中的空格实际上是YAMLMATLAB中的已知问题.在此处查看报告和可能的解决方案.

更新2

根据@Jirka_cigler(YAMLMATLAB开发人员组织)的评论:

在程序版本0.4.3中,我们在字段名称中添加了对空格的支持,因此问题不应再次出现.

大!

我还删除了之前的开发人员在第一次UPDATE中对问题的评论,因为它不再是真的.