Operator Reference

traind_ocv_projT_traind_ocv_projTraindOcvProjTraindOcvProjtraind_ocv_proj (Operator)

traind_ocv_projT_traind_ocv_projTraindOcvProjTraindOcvProjtraind_ocv_proj — Training of an OCV tool.

Signature

traind_ocv_proj(Pattern : : OCVHandle, Name, Mode : )

Description

traind_ocv_projtraind_ocv_projTraindOcvProjTraindOcvProjtraind_ocv_proj trains patterns for an OCV tool that has been created using the operators create_ocv_projcreate_ocv_projCreateOcvProjCreateOcvProjcreate_ocv_proj or read_ocvread_ocvReadOcvReadOcvread_ocv. For this training one or multiple patterns are provided to the system. Such a pattern consists of an image with a reduced domain (ROI) for the area of the pattern. Note that the pattern should not only contain foreground pixels (e.g., dark pixels of a character) but also background pixels. This can be implemented e.g., by the smallest surrounding rectangle of the pattern. Without this context an evaluation of the pattern is not possible.

If more than one pattern has to be trained this can be achieved by multiple calls (one for each pattern) or by calling traind_ocv_projtraind_ocv_projTraindOcvProjTraindOcvProjtraind_ocv_proj once with all patterns and a tuple of the corresponding names. The result will be in both cases the same. However using multiple calls will normally result in a longer execution time than using one call with all patterns.

Execution Information

Multithreading type: reentrant (runs in parallel with non-exclusive operators).
Multithreading scope: global (may be called from any thread).
Processed without parallelization.

This operator modifies the state of the following input parameter:

OCVHandleOCVHandleOCVHandleOCVHandleocvhandle

During execution of this operator, access to the value of this parameter must be synchronized if it is used across multiple threads.

Parameters

PatternPatternPatternpatternpattern (input_object) singlechannelimage(-array) → object (byte)

Pattern to be trained.

OCVHandleOCVHandleOCVHandleOCVHandleocvhandle (input_control, state is modified) ocv → (handle)

Handle of the OCV tool to be trained.

NameNameNamenamename (input_control) string(-array) → (string)

Name(s) of the object(s) to analyze.

Default: 'a' "a" "a" "a" "a"

ModeModeModemodemode (input_control) string → (string)

Mode for training (only one mode implemented).

Default: 'single' "single" "single" "single" "single"

List of values: 'single'"single""single""single""single"

Example (C++)

create_ocv_proj("A",&ocv_handle);
draw_region(&ROI,window_handle);
reduce_domain(Image,ROI,&Sample);
traind_ocv_proj(Sample,ocv_handle,"A","single");

Result

traind_ocv_projtraind_ocv_projTraindOcvProjTraindOcvProjtraind_ocv_proj returns 2 ( H_MSG_TRUE) , if the handle and the training pattern(s) are correct. Otherwise, an exception is raised.

Possible Predecessors

write_ocr_trainfwrite_ocr_trainfWriteOcrTrainfWriteOcrTrainfwrite_ocr_trainf, create_ocv_projcreate_ocv_projCreateOcvProjCreateOcvProjcreate_ocv_proj, read_ocvread_ocvReadOcvReadOcvread_ocv, thresholdthresholdThresholdThresholdthreshold, connectionconnectionConnectionConnectionconnection, select_shapeselect_shapeSelectShapeSelectShapeselect_shape

Possible Successors

close_ocvclose_ocvCloseOcvCloseOcvclose_ocv

Module

OCR/OCV

Operators