Trait opencv::prelude::QRCodeDetectorTraitConst

pub trait QRCodeDetectorTraitConst {
    fn as_raw_QRCodeDetector(&self) -> *const c_void;

    fn detect(
        &self, 
        img: &dyn ToInputArray, 
        points: &mut dyn ToOutputArray
    ) -> Result<bool> { ... }
    fn detect_multi(
        &self, 
        img: &dyn ToInputArray, 
        points: &mut dyn ToOutputArray
    ) -> Result<bool> { ... }
    fn decode_multi(
        &self, 
        img: &dyn ToInputArray, 
        points: &dyn ToInputArray, 
        decoded_info: &mut Vector<String>, 
        straight_qrcode: &mut dyn ToOutputArray
    ) -> Result<bool> { ... }
    fn detect_and_decode_multi(
        &self, 
        img: &dyn ToInputArray, 
        decoded_info: &mut Vector<String>, 
        points: &mut dyn ToOutputArray, 
        straight_qrcode: &mut dyn ToOutputArray
    ) -> Result<bool> { ... }
}

Required methods

fn as_raw_QRCodeDetector(&self) -> *const c_void

Provided methods

fn detect(
    &self,
    img: &dyn ToInputArray,
    points: &mut dyn ToOutputArray
) -> Result<bool>

Detects QR code in image and returns the quadrangle containing the code.

Parameters

• img: grayscale or color (BGR) image containing (or not) QR code.
• points: Output vector of vertices of the minimum-area quadrangle containing the code.

fn detect_multi(
    &self,
    img: &dyn ToInputArray,
    points: &mut dyn ToOutputArray
) -> Result<bool>

Detects QR codes in image and returns the vector of the quadrangles containing the codes.

Parameters

• img: grayscale or color (BGR) image containing (or not) QR codes.
• points: Output vector of vector of vertices of the minimum-area quadrangle containing the codes.

fn decode_multi(
    &self,
    img: &dyn ToInputArray,
    points: &dyn ToInputArray,
    decoded_info: &mut Vector<String>,
    straight_qrcode: &mut dyn ToOutputArray
) -> Result<bool>

Decodes QR codes in image once it’s found by the detect() method.

Parameters

• img: grayscale or color (BGR) image containing QR codes.
• decoded_info: UTF8-encoded output vector of string or empty vector of string if the codes cannot be decoded.
• points: vector of Quadrangle vertices found by detect() method (or some other algorithm).
• straight_qrcode: The optional output vector of images containing rectified and binarized QR codes

C++ default parameters

• straight_qrcode: noArray()

fn detect_and_decode_multi(
    &self,
    img: &dyn ToInputArray,
    decoded_info: &mut Vector<String>,
    points: &mut dyn ToOutputArray,
    straight_qrcode: &mut dyn ToOutputArray
) -> Result<bool>

Both detects and decodes QR codes

Parameters

• img: grayscale or color (BGR) image containing QR codes.
• decoded_info: UTF8-encoded output vector of string or empty vector of string if the codes cannot be decoded.
• points: optional output vector of vertices of the found QR code quadrangles. Will be empty if not found.
• straight_qrcode: The optional output vector of images containing rectified and binarized QR codes

C++ default parameters

• points: noArray()
• straight_qrcode: noArray()

Implementors

impl QRCodeDetectorTraitConst for QRCodeDetector