Struct rxing::oned::rss::expanded::RSSExpandedReader

pub struct RSSExpandedReader { /* private fields */ }

@author Pablo Orduña, University of Deusto (pablo.orduna@deusto.es) @author Eduardo Castillejo, University of Deusto (eduardo.castillejo@deusto.es)

Implementations

impl RSSExpandedReader

pub fn new() -> Self

Trait Implementations

impl AbstractRSSReaderTrait for RSSExpandedReader

const MAX_AVG_VARIANCE: f32 = 0.200000003f32

const MAX_INDIVIDUAL_VARIANCE: f32 = 0.449999988f32

const MIN_FINDER_PATTERN_RATIO: f32 = 0.791666686f32

const MAX_FINDER_PATTERN_RATIO: f32 = 0.892857134f32

fn parseFinderValue( counters: &[u32], finderPatterns: &[[u32; 4]] ) -> Result<u32>

fn count(array: &[u32]) -> u32

👎Deprecated

@param array values to sum @return sum of values @deprecated call {@link MathUtils#sum(int[])}

fn increment(array: &mut [u32], errors: &[f32])

fn decrement(array: &mut [u32], errors: &[f32])

fn isFinderPattern(counters: &[u32]) -> bool

impl Default for RSSExpandedReader

fn default() -> RSSExpandedReader

Returns the “default value” for a type.

impl OneDReader for RSSExpandedReader

fn decode_row( &mut self, rowNumber: u32, row: &BitArray, _hints: &DecodingHintDictionary ) -> Result<RXingResult>

Attempts to decode a one-dimensional barcode format given a single row of

fn _do_decode<B: Binarizer>( &mut self, image: &mut BinaryBitmap<B>, hints: &DecodingHintDictionary ) -> Result<RXingResult>

We’re going to examine rows from the middle outward, searching alternately above and below the middle, and farther out each time. rowStep is the number of rows between each successive attempt above and below the middle. So we’d scan row middle, then middle - rowStep, then middle + rowStep, then middle - (2 * rowStep), etc. rowStep is bigger as the image is taller, but is always at least 1. We’ve somewhat arbitrarily decided that moving up and down by about 1/16 of the image is pretty good; we try more of the image if “trying harder”.

impl Reader for RSSExpandedReader

fn decode<B: Binarizer>( &mut self, image: &mut BinaryBitmap<B> ) -> Result<RXingResult>

Locates and decodes a barcode in some format within an image.

fn decode_with_hints<B: Binarizer>( &mut self, image: &mut BinaryBitmap<B>, hints: &DecodingHintDictionary ) -> 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.

fn reset(&mut self)

Resets any internal state the implementation has after a decode, to prepare it for reuse.