Package org.opencv.objdetect
Class GraphicalCodeDetector
- java.lang.Object
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- org.opencv.objdetect.GraphicalCodeDetector
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- Direct Known Subclasses:
BarcodeDetector
,QRCodeDetector
,QRCodeDetectorAruco
public class GraphicalCodeDetector extends java.lang.Object
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Field Summary
Fields Modifier and Type Field Description protected long
nativeObj
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Constructor Summary
Constructors Modifier Constructor Description protected
GraphicalCodeDetector(long addr)
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description static GraphicalCodeDetector
__fromPtr__(long addr)
java.lang.String
decode(Mat img, Mat points)
Decodes graphical code in image once it's found by the detect() method.java.lang.String
decode(Mat img, Mat points, Mat straight_code)
Decodes graphical code in image once it's found by the detect() method.boolean
decodeMulti(Mat img, Mat points, java.util.List<java.lang.String> decoded_info)
Decodes graphical codes in image once it's found by the detect() method.boolean
decodeMulti(Mat img, Mat points, java.util.List<java.lang.String> decoded_info, java.util.List<Mat> straight_code)
Decodes graphical codes in image once it's found by the detect() method.boolean
detect(Mat img, Mat points)
Detects graphical code in image and returns the quadrangle containing the code.java.lang.String
detectAndDecode(Mat img)
Both detects and decodes graphical codejava.lang.String
detectAndDecode(Mat img, Mat points)
Both detects and decodes graphical codejava.lang.String
detectAndDecode(Mat img, Mat points, Mat straight_code)
Both detects and decodes graphical codeboolean
detectAndDecodeMulti(Mat img, java.util.List<java.lang.String> decoded_info)
Both detects and decodes graphical codesboolean
detectAndDecodeMulti(Mat img, java.util.List<java.lang.String> decoded_info, Mat points)
Both detects and decodes graphical codesboolean
detectAndDecodeMulti(Mat img, java.util.List<java.lang.String> decoded_info, Mat points, java.util.List<Mat> straight_code)
Both detects and decodes graphical codesboolean
detectMulti(Mat img, Mat points)
Detects graphical codes in image and returns the vector of the quadrangles containing the codes.protected void
finalize()
long
getNativeObjAddr()
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Method Detail
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getNativeObjAddr
public long getNativeObjAddr()
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__fromPtr__
public static GraphicalCodeDetector __fromPtr__(long addr)
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detect
public boolean detect(Mat img, Mat points)
Detects graphical code in image and returns the quadrangle containing the code.- Parameters:
img
- grayscale or color (BGR) image containing (or not) graphical code.points
- Output vector of vertices of the minimum-area quadrangle containing the code.- Returns:
- automatically generated
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decode
public java.lang.String decode(Mat img, Mat points, Mat straight_code)
Decodes graphical code in image once it's found by the detect() method. Returns UTF8-encoded output string or empty string if the code cannot be decoded.- Parameters:
img
- grayscale or color (BGR) image containing graphical code.points
- Quadrangle vertices found by detect() method (or some other algorithm).straight_code
- The optional output image containing binarized code, will be empty if not found.- Returns:
- automatically generated
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decode
public java.lang.String decode(Mat img, Mat points)
Decodes graphical code in image once it's found by the detect() method. Returns UTF8-encoded output string or empty string if the code cannot be decoded.- Parameters:
img
- grayscale or color (BGR) image containing graphical code.points
- Quadrangle vertices found by detect() method (or some other algorithm).- Returns:
- automatically generated
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detectAndDecode
public java.lang.String detectAndDecode(Mat img, Mat points, Mat straight_code)
Both detects and decodes graphical code- Parameters:
img
- grayscale or color (BGR) image containing graphical code.points
- optional output array of vertices of the found graphical code quadrangle, will be empty if not found.straight_code
- The optional output image containing binarized code- Returns:
- automatically generated
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detectAndDecode
public java.lang.String detectAndDecode(Mat img, Mat points)
Both detects and decodes graphical code- Parameters:
img
- grayscale or color (BGR) image containing graphical code.points
- optional output array of vertices of the found graphical code quadrangle, will be empty if not found.- Returns:
- automatically generated
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detectAndDecode
public java.lang.String detectAndDecode(Mat img)
Both detects and decodes graphical code- Parameters:
img
- grayscale or color (BGR) image containing graphical code.- Returns:
- automatically generated
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detectMulti
public boolean detectMulti(Mat img, Mat points)
Detects graphical codes in image and returns the vector of the quadrangles containing the codes.- Parameters:
img
- grayscale or color (BGR) image containing (or not) graphical codes.points
- Output vector of vector of vertices of the minimum-area quadrangle containing the codes.- Returns:
- automatically generated
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decodeMulti
public boolean decodeMulti(Mat img, Mat points, java.util.List<java.lang.String> decoded_info, java.util.List<Mat> straight_code)
Decodes graphical codes in image once it's found by the detect() method.- Parameters:
img
- grayscale or color (BGR) image containing graphical 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_code
- The optional output vector of images containing binarized codes- Returns:
- automatically generated
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decodeMulti
public boolean decodeMulti(Mat img, Mat points, java.util.List<java.lang.String> decoded_info)
Decodes graphical codes in image once it's found by the detect() method.- Parameters:
img
- grayscale or color (BGR) image containing graphical 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).- Returns:
- automatically generated
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detectAndDecodeMulti
public boolean detectAndDecodeMulti(Mat img, java.util.List<java.lang.String> decoded_info, Mat points, java.util.List<Mat> straight_code)
Both detects and decodes graphical codes- Parameters:
img
- grayscale or color (BGR) image containing graphical 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 graphical code quadrangles. Will be empty if not found.straight_code
- The optional vector of images containing binarized codes- If there are QR codes encoded with a Structured Append mode on the image and all of them detected and decoded correctly, method writes a full message to position corresponds to 0-th code in a sequence. The rest of QR codes from the same sequence have empty string.
- Returns:
- automatically generated
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detectAndDecodeMulti
public boolean detectAndDecodeMulti(Mat img, java.util.List<java.lang.String> decoded_info, Mat points)
Both detects and decodes graphical codes- Parameters:
img
- grayscale or color (BGR) image containing graphical 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 graphical code quadrangles. Will be empty if not found.- If there are QR codes encoded with a Structured Append mode on the image and all of them detected and decoded correctly, method writes a full message to position corresponds to 0-th code in a sequence. The rest of QR codes from the same sequence have empty string.
- Returns:
- automatically generated
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detectAndDecodeMulti
public boolean detectAndDecodeMulti(Mat img, java.util.List<java.lang.String> decoded_info)
Both detects and decodes graphical codes- Parameters:
img
- grayscale or color (BGR) image containing graphical codes.decoded_info
- UTF8-encoded output vector of string or empty vector of string if the codes cannot be decoded.- If there are QR codes encoded with a Structured Append mode on the image and all of them detected and decoded correctly, method writes a full message to position corresponds to 0-th code in a sequence. The rest of QR codes from the same sequence have empty string.
- Returns:
- automatically generated
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finalize
protected void finalize() throws java.lang.Throwable
- Overrides:
finalize
in classjava.lang.Object
- Throws:
java.lang.Throwable
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