Trait opencv::hub_prelude::OCRBeamSearchDecoderTrait

pub trait OCRBeamSearchDecoderTrait: BaseOCR {
    fn as_raw_OCRBeamSearchDecoder(&self) -> *mut c_void;

    fn run(
        &mut self, 
        image: &mut Mat, 
        output_text: &mut String, 
        component_rects: &mut VectorOfRect, 
        component_texts: &mut VectorOfString, 
        component_confidences: &mut VectorOff32, 
        component_level: i32
    ) -> Result<()> { ... }
    fn run_1(
        &mut self, 
        image: &mut Mat, 
        mask: &mut Mat, 
        output_text: &mut String, 
        component_rects: &mut VectorOfRect, 
        component_texts: &mut VectorOfString, 
        component_confidences: &mut VectorOff32, 
        component_level: i32
    ) -> Result<()> { ... }
    fn run_2(
        &mut self, 
        image: &dyn ToInputArray, 
        min_confidence: i32, 
        component_level: i32
    ) -> Result<String> { ... }
    fn run_3(
        &mut self, 
        image: &dyn ToInputArray, 
        mask: &dyn ToInputArray, 
        min_confidence: i32, 
        component_level: i32
    ) -> Result<String> { ... }
}

OCRBeamSearchDecoder class provides an interface for OCR using Beam Search algorithm.

Note:

• (C++) An example on using OCRBeamSearchDecoder recognition combined with scene text detection can be found at the demo sample: https://github.com/opencv/opencv_contrib/blob/master/modules/text/samples/word_recognition.cpp

Required methods

fn as_raw_OCRBeamSearchDecoder(&self) -> *mut c_void

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Provided methods

fn run(
    &mut self,
    image: &mut Mat,
    output_text: &mut String,
    component_rects: &mut VectorOfRect,
    component_texts: &mut VectorOfString,
    component_confidences: &mut VectorOff32,
    component_level: i32
) -> Result<()>

Recognize text using Beam Search.

Takes image on input and returns recognized text in the output_text parameter. Optionally provides also the Rects for individual text elements found (e.g. words), and the list of those text elements with their confidence values.

Parameters

• image: Input binary image CV_8UC1 with a single text line (or word).

• output_text: Output text. Most likely character sequence found by the HMM decoder.

• component_rects: If provided the method will output a list of Rects for the individual text elements found (e.g. words).

• component_texts: If provided the method will output a list of text strings for the recognition of individual text elements found (e.g. words).

• component_confidences: If provided the method will output a list of confidence values for the recognition of individual text elements found (e.g. words).

• component_level: Only OCR_LEVEL_WORD is supported.

C++ default parameters

• component_rects: NULL
• component_texts: NULL
• component_confidences: NULL
• component_level: 0

fn run_1(
    &mut self,
    image: &mut Mat,
    mask: &mut Mat,
    output_text: &mut String,
    component_rects: &mut VectorOfRect,
    component_texts: &mut VectorOfString,
    component_confidences: &mut VectorOff32,
    component_level: i32
) -> Result<()>

C++ default parameters

• component_rects: NULL
• component_texts: NULL
• component_confidences: NULL
• component_level: 0

fn run_2(
    &mut self,
    image: &dyn ToInputArray,
    min_confidence: i32,
    component_level: i32
) -> Result<String>

C++ default parameters

• component_level: 0

fn run_3(
    &mut self,
    image: &dyn ToInputArray,
    mask: &dyn ToInputArray,
    min_confidence: i32,
    component_level: i32
) -> Result<String>

C++ default parameters

• component_level: 0

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Implementors

impl OCRBeamSearchDecoderTrait for OCRBeamSearchDecoder

fn as_raw_OCRBeamSearchDecoder(&self) -> *mut c_void

impl OCRBeamSearchDecoderTrait for PtrOfOCRBeamSearchDecoder

fn as_raw_OCRBeamSearchDecoder(&self) -> *mut c_void

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