org.opencv.objdetect

Class BarcodeDetector

java.lang.Object

org.opencv.objdetect.GraphicalCodeDetector

org.opencv.objdetect.BarcodeDetector

public class BarcodeDetector
extends GraphicalCodeDetector

Constructor Summary

Constructors

Constructor and Description
BarcodeDetector() Initialize the BarcodeDetector.
BarcodeDetector(java.lang.String prototxt_path, java.lang.String model_path) Initialize the BarcodeDetector.

Method Summary

Modifier and Type	Method and Description
static BarcodeDetector	__fromPtr__(long addr)
boolean	decodeWithType(Mat img, Mat points, java.util.List<java.lang.String> decoded_info, java.util.List<java.lang.String> decoded_type) Decodes barcode in image once it's found by the detect() method.
boolean	detectAndDecodeWithType(Mat img, java.util.List<java.lang.String> decoded_info, java.util.List<java.lang.String> decoded_type) Both detects and decodes barcode
boolean	detectAndDecodeWithType(Mat img, java.util.List<java.lang.String> decoded_info, java.util.List<java.lang.String> decoded_type, Mat points) Both detects and decodes barcode

Methods inherited from class org.opencv.objdetect.GraphicalCodeDetector

decode, decode, decodeMulti, decodeMulti, detect, detectAndDecode, detectAndDecode, detectAndDecode, detectAndDecodeMulti, detectAndDecodeMulti, detectAndDecodeMulti, detectMulti, getNativeObjAddr

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

BarcodeDetector

public BarcodeDetector()

Initialize the BarcodeDetector.

BarcodeDetector

public BarcodeDetector(java.lang.String prototxt_path,
                       java.lang.String model_path)

Initialize the BarcodeDetector. Parameters allow to load _optional_ Super Resolution DNN model for better quality.

Parameters:

prototxt_path - prototxt file path for the super resolution model

model_path - model file path for the super resolution model

Method Detail

__fromPtr__

public static BarcodeDetector __fromPtr__(long addr)

decodeWithType

public boolean decodeWithType(Mat img,
                              Mat points,
                              java.util.List<java.lang.String> decoded_info,
                              java.util.List<java.lang.String> decoded_type)

Decodes barcode in image once it's found by the detect() method.

Parameters:

img - grayscale or color (BGR) image containing bar code.

points - vector of rotated rectangle vertices found by detect() method (or some other algorithm). For N detected barcodes, the dimensions of this array should be [N][4]. Order of four points in vector<Point2f> is bottomLeft, topLeft, topRight, bottomRight.

decoded_info - UTF8-encoded output vector of string or empty vector of string if the codes cannot be decoded.

decoded_type - vector strings, specifies the type of these barcodes

Returns:

true if at least one valid barcode have been found

detectAndDecodeWithType

public boolean detectAndDecodeWithType(Mat img,
                                       java.util.List<java.lang.String> decoded_info,
                                       java.util.List<java.lang.String> decoded_type)

Both detects and decodes barcode

Parameters:

img - grayscale or color (BGR) image containing barcode.

decoded_info - UTF8-encoded output vector of string(s) or empty vector of string if the codes cannot be decoded.

decoded_type - vector of strings, specifies the type of these barcodes

Returns:

true if at least one valid barcode have been found

detectAndDecodeWithType

public boolean detectAndDecodeWithType(Mat img,
                                       java.util.List<java.lang.String> decoded_info,
                                       java.util.List<java.lang.String> decoded_type,
                                       Mat points)

Both detects and decodes barcode

Parameters:

img - grayscale or color (BGR) image containing barcode.

decoded_info - UTF8-encoded output vector of string(s) or empty vector of string if the codes cannot be decoded.

decoded_type - vector of strings, specifies the type of these barcodes

points - optional output vector of vertices of the found barcode rectangle. Will be empty if not found.

Returns:

true if at least one valid barcode have been found