pub struct ByQuadrantReader<T: Reader>(/* private fields */);Expand description
This class attempts to decode a barcode from an image, not by scanning the whole image, but by scanning subsets of the image. This is important when there may be multiple barcodes in an image, and detecting a barcode may find parts of multiple barcode and fail to decode (e.g. QR Codes). Instead this scans the four quadrants of the image – and also the center ‘quadrant’ to cover the case where a barcode is found in the center.
@see GenericMultipleBarcodeReader
Implementations§
Trait Implementations§
Source§impl<T: Reader> Reader for ByQuadrantReader<T>
impl<T: Reader> Reader for ByQuadrantReader<T>
Source§fn decode<B: Binarizer>(
&mut self,
image: &mut BinaryBitmap<B>,
) -> Result<RXingResult>
fn decode<B: Binarizer>( &mut self, image: &mut BinaryBitmap<B>, ) -> Result<RXingResult>
Locates and decodes a barcode in some format within an image. Read more
Source§fn decode_with_hints<B: Binarizer>(
&mut self,
image: &mut BinaryBitmap<B>,
hints: &DecodeHints,
) -> Result<RXingResult>
fn decode_with_hints<B: Binarizer>( &mut self, image: &mut BinaryBitmap<B>, hints: &DecodeHints, ) -> Result<RXingResult>
Locates and decodes a barcode in some format within an image. This method also accepts
hints, each possibly associated to some data, which may help the implementation decode. Read more
Auto Trait Implementations§
impl<T> Freeze for ByQuadrantReader<T>where
T: Freeze,
impl<T> RefUnwindSafe for ByQuadrantReader<T>where
T: RefUnwindSafe,
impl<T> Send for ByQuadrantReader<T>where
T: Send,
impl<T> Sync for ByQuadrantReader<T>where
T: Sync,
impl<T> Unpin for ByQuadrantReader<T>where
T: Unpin,
impl<T> UnwindSafe for ByQuadrantReader<T>where
T: UnwindSafe,
Blanket Implementations§
Source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
Source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
Source§impl<T> IntoEither for T
impl<T> IntoEither for T
Source§fn into_either(self, into_left: bool) -> Either<Self, Self>
fn into_either(self, into_left: bool) -> Either<Self, Self>
Converts
self into a Left variant of Either<Self, Self>
if into_left is true.
Converts self into a Right variant of Either<Self, Self>
otherwise. Read moreSource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
Converts
self into a Left variant of Either<Self, Self>
if into_left(&self) returns true.
Converts self into a Right variant of Either<Self, Self>
otherwise. Read moreSource§impl<T> Pointable for T
impl<T> Pointable for T
Source§impl<SS, SP> SupersetOf<SS> for SPwhere
SS: SubsetOf<SP>,
impl<SS, SP> SupersetOf<SS> for SPwhere
SS: SubsetOf<SP>,
Source§fn to_subset(&self) -> Option<SS>
fn to_subset(&self) -> Option<SS>
The inverse inclusion map: attempts to construct
self from the equivalent element of its
superset. Read moreSource§fn is_in_subset(&self) -> bool
fn is_in_subset(&self) -> bool
Checks if
self is actually part of its subset T (and can be converted to it).Source§fn to_subset_unchecked(&self) -> SS
fn to_subset_unchecked(&self) -> SS
Use with care! Same as
self.to_subset but without any property checks. Always succeeds.Source§fn from_subset(element: &SS) -> SP
fn from_subset(element: &SS) -> SP
The inclusion map: converts
self to the equivalent element of its superset.