read_ocvT_read_ocvReadOcvReadOcvread_ocv (算子)

名称

read_ocvT_read_ocvReadOcvReadOcvread_ocv — 从文件中读取 OCV 工具。

签名

read_ocv( : : FileName : OCVHandle)

描述

read_ocvread_ocvReadOcvReadOcvReadOcvread_ocv reads an OCV tool from file. The tool will contain the same information that it contained when saving it with write_ocvwrite_ocvWriteOcvWriteOcvWriteOcvwrite_ocv。After reading the tool the training can be completed for those patterns which have not been trained so far. Otherwise a pattern comparison can be applied directly by calling do_ocv_simpledo_ocv_simpleDoOcvSimpleDoOcvSimpleDoOcvSimpledo_ocv_simple。

As extension '.ocv' is used. If this extension is not given with the file name it will be added automatically.

执行信息

多线程类型：可重入（与非独占算子并行运行）。
多线程作用域：全局（可从任何线程调用）。
未采用并行化处理。

此算子返回一个句柄。请注意，即使该句柄被用作特定算子的输入参数，这些算子仍可能改变此句柄类型的实例状态。

参数

FileNameFileNameFileNameFileNamefileNamefile_name (输入控制) filename.read → (string)

Name of the file which has to be read.

默认值： 'test_ocv' "test_ocv" "test_ocv" "test_ocv" "test_ocv" "test_ocv"

File extension: .ocv

OCVHandleOCVHandleOCVHandleOCVHandleOCVHandleocvhandle (输出控制) ocv → (handle)

Handle of read OCV tool.

示例 (C++ (HALCON 5.0-10.0))

read_ocv("ocv_file",&ocv_handle);
for (i=0; i<1000; i++)
{
  grab_image_async(&Image,fg_handle,-1);
  reduce_domain(Image,ROI,&Pattern);
  do_ocv_simple(Pattern,ocv_handle,"A",
                "true","true","false","true",10,
                &Quality);
}
close_ocv(ocv_handle);

结果

read_ocvread_ocvReadOcvReadOcvReadOcvread_ocv returns 2 ( H_MSG_TRUE) , if the file is correct.否则，将抛出异常。

可能的前趋

write_ocvwrite_ocvWriteOcvWriteOcvWriteOcvwrite_ocv

可能的后继

do_ocv_simpledo_ocv_simpleDoOcvSimpleDoOcvSimpleDoOcvSimpledo_ocv_simple, close_ocvclose_ocvCloseOcvCloseOcvCloseOcvclose_ocv

另见

read_ocrread_ocrReadOcrReadOcrReadOcrread_ocr

模块

光学字符识别/光学字符验证

算子