Halcon怎么读取json文件

这篇文章主要介绍“Halcon怎么读取JSON文件”，在日常操作中，相信很多人在Halcon怎么读取json文件问题上存在疑惑，小编查阅了各式资料，整理出简单好用的操作方法，希望对大家解答”Halcon怎么读取json文件”的疑惑有所帮助！接下来，请跟着小编一起来学习吧！

一、get_dict_ttuple算子

①定义

get_dict_tuple( DictHandle, Key ， Tuple)

DictHandle：字典句柄

key:键

tuple:根据Key在句柄下取内容，存放到tuple中

②功能:从字典中检索与键关联的元组

二、get_dict_param算子

①定义

get_dict_param( DictHandle, GenParamName, Key ,GenParamValue)

DictHandle：字典句柄

GenParamName:根据参数在字典中查询相关信息。当填写’keys’时，默认取所有元素

key：键。可以不填内容，直接写 []

GenParamValue:读取的内容存放

②功能:查询字典参数或有关字典的信息。

三、实践（直接上代码）

有些原理我也不是特别清楚，但通过实践几次之后，略有所感。所有，实践是检验真理的唯一标准，多动手。

 ************以下是我json文件内容****************    {"path":"C:\\Users\\Administrator\\Desktop\\算子开发任务书\\000001.png",*    "outputs":{"object":[{"name":"sharp","polyGon":{"x1":2613,"y1":418,"x2":2686,"y2":1218,"x3":2722,"y3":2054,"x4":2759,"y4":2372,"x5":2795,"y5":2445,"x6":2759,"y6":3136,"x7":2777,"y7":3136,"x8":2831,"y8":2881,"x9":2904,"y9":4263,"x10":3013,"y10":4263,"x11":3013,"y11":3900,"x12":3086,"y12":3881,"x13":3140,"y13":4263,"x14":3268,"y14":4263,"x15":3086,"y15":2972,"x16":3131,"y16":2900,"x17":3177,"y17":3100,"x18":3231,"y18":3109,"x19":3050,"y19":2154,"x20":3122,"y20":2172,"x21":3013,"y21":1072,"x22":2977,"y22":336,"x23":2868,"y23":309,"x24":2904,"y24":590,"x25":2777,"y25":572,"x26":2722,"y26":372}}]},*    "time_labeled":1582335060421,*    "labeled":true,*    "size":{"width":3798,"height":8748,"depth":3}}*读取json文件,将内容放入字典中read_dict('data.json',[],[],DictJson)*取字典中所有关键字get_dict_param(DictJson,'keys',[],ALLKeys)*读取outputs下的内容get_dict_tuple(DictJson,'outputs',outputsDict)*取字典中所有关键字*这一步其实是对outputs内容的读取，但读取的内容可能是地址信息get_dict_param(outputsDict,'keys',[],outputsDictAllKeys)*根据‘地址'信息将内容读入到元组中get_dict_tuple(outputsDict,outputsDictAllKeys,outputsObjectDict)*读取元组数据get_dict_param(outputsObjectDict,'keys',[],outputsObjectDictALLKeys)*元组中数据数量统计（其中元组中有小元组，而数量是指小元组的数量）num:=|outputsObjectDictALLKeys|*遍历for keysIndex:=0 to num-1 by 1    try        get_dict_tuple(outputsObjectDict,outputsObjectDictALLKeys[keysIndex],objectDict)        get_dict_param(objectDict,'keys',[],objectDictAllKeys)                *标注类型 矩形框还是多边形        objectShape:=objectDictAllKeys[1]        get_dict_tuple (objectDict, objectDictAllKeys[1], objectLabelPosition)        get_dict_param(objectLabelPosition,'keys',[],objectLabelPositionDictAllKeys)        *矩形框        if(objectShape='bndbox')            get_dict_tuple(objectLabelPosition,objectLabelPositionDictAllKeys[0],xMin)            get_dict_tuple (objectLabelPosition, objectLabelPositionDictAllKeys[1], yMin)            get_dict_tuple (objectLabelPosition, objectLabelPositionDictAllKeys[2], xMax)            get_dict_tuple (objectLabelPosition, objectLabelPositionDictAllKeys[3], yMax)             *创建一个矩形            gen_rectangle1(labelRegion,yMin,xMin,yMax,xMax)        endif        *多边形        if(objectShape='polygon')            bufX:=[]            bufY:=[]            for keysIndex0:=0 to |objectLabelPositionDictAllKeys|/2-1 by 1                xAddr:=keysIndex0*2                yAddr:=xAddr+1                get_dict_tuple (objectLabelPosition, objectLabelPositionDictAllKeys[xAddr], positionX)                bufX:=[bufX,positionX]                get_dict_tuple (objectLabelPosition, objectLabelPositionDictAllKeys[yAddr], positionY)                   bufY:=[bufY,positionY]            endfor            bufX:=[bufX,bufX[0]]            bufY:=[bufY,bufY[0]]            *创建多边形            gen_region_polygon(labelRegion,bufY,bufX)            fill_up(labelRegion,labelRegion)        endif        *读取 name 内容，存放到objectName中        get_dict_tuple(objectDict,objectDictAllKeys[0],objectName)    catch (Exception)    endtryendfor

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