opencv::wechat_qrcode

Trait WeChatQRCodeTrait

Source 
pub trait WeChatQRCodeTrait: WeChatQRCodeTraitConst {
    // Required method
    fn as_raw_mut_WeChatQRCode(&mut self) -> *mut c_void;

    // Provided methods
    fn detect_and_decode(
        &mut self,
        img: &impl ToInputArray,
        points: &mut impl ToOutputArray,
    ) -> Result<Vector<String>> { ... }
    fn detect_and_decode_def(
        &mut self,
        img: &impl ToInputArray,
    ) -> Result<Vector<String>> { ... }
    fn set_scale_factor(&mut self, _scaling_factor: f32) -> Result<()> { ... }
    fn get_scale_factor(&mut self) -> Result<f32> { ... }
}
Expand description

Mutable methods for crate::wechat_qrcode::WeChatQRCode

Required Methods§

Source

fn as_raw_mut_WeChatQRCode(&mut self) -> *mut c_void

Provided Methods§

Source

fn detect_and_decode( &mut self, img: &impl ToInputArray, points: &mut impl ToOutputArray, ) -> Result<Vector<String>>

Both detects and decodes QR code. To simplify the usage, there is a only API: detectAndDecode

§Parameters
  • img: supports grayscale or color (BGR) image.
  • points: optional output array of vertices of the found QR code quadrangle. Will be empty if not found.
§Returns

list of decoded string.

§C++ default parameters
  • points: noArray()
Source

fn detect_and_decode_def( &mut self, img: &impl ToInputArray, ) -> Result<Vector<String>>

Both detects and decodes QR code. To simplify the usage, there is a only API: detectAndDecode

§Parameters
  • img: supports grayscale or color (BGR) image.
  • points: optional output array of vertices of the found QR code quadrangle. Will be empty if not found.
§Returns

list of decoded string.

§Note

This alternative version of WeChatQRCodeTrait::detect_and_decode function uses the following default values for its arguments:

  • points: noArray()
Source

fn set_scale_factor(&mut self, _scaling_factor: f32) -> Result<()>

set scale factor QR code detector use neural network to detect QR. Before running the neural network, the input image is pre-processed by scaling. By default, the input image is scaled to an image with an area of 160000 pixels. The scale factor allows to use custom scale the input image: width = scaleFactorwidth height = scaleFactorwidth

scaleFactor valuse must be > 0 and <= 1, otherwise the scaleFactor value is set to -1 and use default scaled to an image with an area of 160000 pixels.

Source

fn get_scale_factor(&mut self) -> Result<f32>

Dyn Compatibility§

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors§