The gozxing from makiuchi-d

NotFoundException: startSize = 1

IMG: https://i.imgur.com/UoRQWJE.jpg

I got this error from result, err := qrReader.Decode(bmp, nil)

Implement DataMatrixWriter

dependencies:

datamatrix.DataMatrixWriter
- Dimension
- datamatrix.encoder.DefaultPlacement
- datamatrix.encoder.ErrorCorrection
- datamatrix.encoder.HighLevelEncoder
- datamatrix.encoder.SymbolInfo
- datamatrix.encoder.SymbolShapeHint
- qrcode.encoder.ByteMatrix
Dimension
datamatrix.encoder.DefaultPlacement
datamatrix.encoder.ErrorCorrection
- datamatrix.encoder.SymbolInfo
datamatrix.encoder.HighLevelEncoder
- Dimension
- datamatrix.encoder.SymbolShapeHint
- datamatrix.encoder.ASCIIEncoder
- datamatrix.encoder.C40Encoder
- datamatrix.encoder.TextEncoder
- datamatrix.encoder.X12Encoder
- datamatrix.encoder.EdifactEncoder
- datamatrix.encoder.Base256Encoder
- datamatrix.encoder.EncoderContext
datamatrix.encoder.SymbolInfo
- datamatrix.encoder.DataMatrixSymbolInfo144
- datamatrix.encoder.SymbolShapeHint
- Dimension
datamatrix.encoder.SymbolShapeHint
datamatrix.encoder.ASCIIEncoder
- datamatrix.encoder.Encoder
- datamatrix.encoder.HighLevelEncoder
- datamatrix.encoder.EncoderContext
datamatrix.encoder.C40Encoder
- datamatrix.encoder.Encoder
- datamatrix.encoder.HighLevelEncoder
- datamatrix.encoder.EncoderContext
datamatrix.encoder.TextEncoder
- datamatrix.encoder.C40Encoder
- datamatrix.encoder.HighLevelEncoder
datamatrix.encoder.X12Encoder
- datamatrix.encoder.C40Encoder
- datamatrix.encoder.HighLevelEncoder
- datamatrix.encoder.EncoderContext
datamatrix.encoder.EdifactEncoder
- datamatrix.encoder.Encoder
- datamatrix.encoder.HighLevelEncoder
- datamatrix.encoder.EncoderContext
datamatrix.encoder.Base256Encoder
- datamatrix.encoder.Encoder
- datamatrix.encoder.HighLevelEncoder
- datamatrix.encoder.EncoderContext
datamatrix.encoder.EncoderContext
- Dimension
- datamatrix.encoder.SymbolShapeHint
- datamatrix.encoder.SymbolInfo
datamatrix.encoder.DataMatrixSymbolInfo144
- datamatrix.encoder.SymbolInfo
datamatrix.encoder.Encoder
- datamatrix.encoder.EncoderContext

NotFoundException: startSize = 0

Could you please check, why qrReader.Decode(img, nil) returns error "NotFoundException: startSize = 0"?

#24

File is attached, QR-code looks normal.
Online version doesn't decode it too.

How reading EAN?

Give an example of reading ENA from a file please...

error: NotFoundException: dimension = 63

this is my code, the error occur in the last row:

func helloworld(c *gin.Context) {
		file, _ := c.FormFile("file")
		log.Println(file.Filename)
		fileDetail, err := file.Open()
		if err != nil {
			c.JSON(http.StatusBadRequest, PostScanSettlementReply{
				Status: http.StatusBadRequest,
				Msg:    "error: i" + err.Error(),
			})
			return
		}
		img, _, err := image.Decode(fileDetail)
		if err != nil {
			logcat.Log().Sugar().Error("image decode error, the error is ", err.Error())
			c.JSON(http.StatusBadRequest, PostScanSettlementReply{
				Status: http.StatusBadRequest,
				Msg:    "error: " + err.Error(),
			})
			return
		}

		// prepare BinaryBitmap
		bmp, _ := gozxing.NewBinaryBitmapFromImage(img)

		// decode image
		qrReader := qrcode.NewQRCodeReader()
		result, err := qrReader.Decode(bmp, nil)
                //...... more code
}

The qrcode is

FNC1 in Datamatrix

How to add FNC1 character to the beginning of datamatrix code?
Hint gozxing.EncodeHintType_GS1_FORMAT not work in datamatrix writer

Implement CodaBarWriter

oned.CodaBarWriter
- oned.OneDimensionalCodeWriter

cannot decode a qrcode

I try to decode a qrcode, but I cannot decode it.
it give me a error

NotFoundException

but actully it is a normal qrcode, this is my pic.

that my code:

func DecodeFile(fi string)(string, error) {
	file, _ := os.Open(fi)
	img, _, _:= image.Decode(file)
	// prepare BinaryBitmap
	bmp, _:= gozxing.NewBinaryBitmapFromImage(img)
	// decode image
	result, err := qrcode.NewQRCodeReader().Decode(bmp, nil)
	if err != nil {
		return "", err
	}
	return result.String(), nil
}

Barcode recognition on scanned pages

Hi @makiuchi-d,

First off, thank you for such a great library!

I have a question. In a scenario of scanning documents, where the content area is large and barcode presence percentage is relatively small, what might be a recommended approach? Using scanned pages' images as is doesn't work, no barcodes are found on a page. As a workaround, I used cropping the image leaving only top-right area (a potential place of a barcode) for example. That worked, but I'm not sure, probably there is some more robust approach embedded to the library which I just missed?

Unable to decode some QR codes

Hi
Thanks for the library first. It's working well. However for some QR codes it doesn't able to find QR codes. I've also tried some hints e.g. Try harder. But it doesn't work. The code I've been trying with is;

`bmp, err := gozxing.NewBinaryBitmap(gozxing.NewGlobalHistgramBinarizer(gozxing.NewLuminanceSourceFromImage(img)))
hints := map[gozxing.DecodeHintType]interface{}{
gozxing.DecodeHintType_TRY_HARDER: true,
gozxing.DecodeHintType_POSSIBLE_FORMATS: []gozxing.BarcodeFormat{
gozxing.BarcodeFormat_QR_CODE},
}

// decode image
qrReader := qrcode.NewQRCodeReader()
result, err := qrReader.Decode(bmp, hints)`

And the QR codes, which doesn't decode/detected are the following.

Decrease White Border

Hello! Is there any way to decrease the white border?

Can't read qrcodes from github.com/chai2010/qrcode

Hey makiuchi,

Thank you for the great and active development!
I am currently trying to generate and read qr codes within Go.

The only kinda fast encoding library I found was at github.com/chai2010/qrcode. However, the decoding from the wrapped libqrencode is unable to read the codes generated by itself, as can be seen here: chai2010/qrcode#2

I generated a sample file with the maximum bytes:

As the online version of Zxing was able to read it (it's just "Hello World. " repeatedly), I hoped that this library can read it. Sadly, it doesn't.

Do you know

Why decoding doesn't work?
What's your recommended approach to quickly encode & decode qr codes, if the issue is within the encoding library?

Implement RSS14Reader

RSS14Reader

FormatException: IllegalArgumentException: versionNumber = 0

The file to decode: https://pyds.oss-cn-beijing.aliyuncs.com/uploads/test-data/2019-11-13/deskewed/09e0789b-8ada-4ff4-bc81-3339c805eedf.png

My cellphone can scan it.

Implement qrcode.detector.Detector

This issue related to #1

Dependencies of qrcode.detector.Detector:

Implement UPC/EAN Readers

Dependencies:

NotFoundException: startSize = 0

"errVerbose":"NotFoundException: startSize = 0:
qukan-ugc/vendor/github.com/makiuchi-d/gozxing/qrcode/detector.(*FinderPatternFinder).SelectBestPatterns
/data/jenkins/home/workspace/techcenter_content_server-ugc-api/src/qukan-ugc/vendor/github.com/makiuchi-d/gozxing/qrcode/detector/finder_pattern_finder.go:459

Implement ITFReader

PDF417

Is there plans to port PDF417?

can't decode gozxing, but zxing online decode correctly

zxing.org/w/decode

Can't decode qr, but zxing online decode correctly

First of all, thanks for this great pure go port.

I'm having a problem with a qr extracted from a pdf, I'm saving it to a jpg before trying to decode

The code I'm using is this

qrImage := args[0]
qrFile, _ := os.Open(qrImage)
img, _, _ := image.Decode(qrFile)

bmp, err := gozxing.NewBinaryBitmapFromImage(img)
handleError(err) // this only print the error

qrReader := qrcode.NewQRCodeReader()
result, err := qrReader.Decode(bmp, nil)
handleError(err)

fmt.Println(result)

This code is showing not found exception, but zxing online shows the following

I try also with hints (maybe I'm doing it wrong)

hints :=  map[gozxing.DecodeHintType]interface{}{
	gozxing.DecodeHintType_PURE_BARCODE: true,
	gozxing.DecodeHintType_POSSIBLE_FORMATS: []gozxing.BarcodeFormat{
		gozxing.BarcodeFormat_DATA_MATRIX },
}
result, err := qrReader.Decode(bmp, hints)

with format exception.

Need some help, because the users will be loading the pdf dynamically

wechat miniprogram qrcode parse error

result, err := qrReader.Decode(bmp, nil)
NotFoundException: startSize = 0

Aztec decoding support

A vote for aztec code decoding support

error while parsing qr code image

I am getting error while trying to parse qr code png image.

"NotFoundException: (w, h) = (492, 492), (x, y) = (63, -7)"
is the error message I am getting.

I am sorry, I cant attach the sample QR code with you.

code

f, _ = ioutils.ReadFile(filepath)
require.NoError(t, err)
img, _, err := image.Decode(f)
require.NoError(t, err)

bmp, err := gozxing.NewBinaryBitmapFromImage(img)
require.NoError(t, err)
// decode image
qrReader := qrcode.NewQRCodeReader()
result, err := qrReader.Decode(bmp, nil)
require.NoError(t, err) // Error is thrown here.

Please add some examples, encoder and decoder?

NotFoundException: dimension = 75

My QR Code like this:

when use Decode, this error happened:
qrcode.NewQRCodeReader().Decode error:NotFoundException: dimension = 75

What could be the reason?

This QR Code picture can be scanned by WeChat to get the result.

decode panic

panic: runtime error: invalid memory address or nil pointer dereference
[signal 0xc0000005 code=0x0 addr=0x20 pc=0xbf0648]

goroutine 1 [running]:
github.com/makiuchi-d/gozxing.NewLuminanceSourceFromImage({0x0, 0x0})
	D:/Program Files/GOPATH/pkg/mod/github.com/makiuchi-d/[email protected]/go_image_luminance_source.go:19 +0x28
github.com/makiuchi-d/gozxing.NewBinaryBitmapFromImage({0x0?, 0x0?})
	D:/Program Files/GOPATH/pkg/mod/github.com/makiuchi-d/[email protected]/go_image_luminance_source.go:10 +0x27

here is my code

func main() {
	// open and decode image file
	file, _ := os.Open("D:\\AppData\\Local\\Temp\\123.jpg")
	img, _, _ := image.Decode(file)

	// prepare BinaryBitmap
	bmp, _ := gozxing.NewBinaryBitmapFromImage(img)

	// decode image
	qrReader := qrcode.NewQRCodeReader()
	result, _ := qrReader.Decode(bmp, nil)

	fmt.Println(result)
}

Version tags

Could you add version tags to this module to indicate release stability? I'd be happy to help you out with setting this up, as well as some GitHub Actions automation for releases when a new tag is pushed.

QR decoding of this file does not find a code. Scanners (Android, online) find it.

The attached PNG file cannot be detected by the lib. What am I doing wrong?

func Decode(data []byte) (string, error) {
	img, err := png.Decode(bytes.NewReader(data))
	if err != nil {
		return "", ErrNotPNG
	}
	// prepare BinaryBitmap
	bmp, err := gozxing.NewBinaryBitmapFromImage(img)
	if err != nil {
		return "", ErrNotPNG
	}
	// decode image
	qrReader := qr1.NewQRCodeReader()
	result, err := qrReader.Decode(bmp, nil)
	if err != nil {
		return "", ErrNotQRCode
	}
	return result.GetText(), nil
}```
![qr](https://user-images.githubusercontent.com/39924160/227664064-a9c716f0-1907-49da-8f15-3a60cb2a0150.png)

Datamatrix encoder in Writter

Hello
Is there anything planned for Datamatrix encoding ?
In the original library, there is an extra step for "data encodation": Zxing DataMatrixWriter

It looks like that all the code is already there in golang, the only missing part is to use EncodeHintType (for instance FORCE_C40 is missing)

Runtime error on encode cyrillic letters

Hello! I'm trying to make datamatrix code for Cyrillic

text := "Mосква"
datamatrixWriter := datamatrix.NewDataMatrixWriter()
datamatrixCode, _ := datamatrixWriter.Encode(text, gozxing.BarcodeFormat_DATA_MATRIX, 648, 648, nil)

and Windows1251 ("Ìîñêâà"):

text := "Mосква"
enc := charmap.Windows1251.NewEncoder()
win1251text, _ := enc.String(text)
datamatrixWriter := datamatrix.NewDataMatrixWriter()
datamatrixCode, _ := datamatrixWriter.Encode(win1251text, gozxing.BarcodeFormat_DATA_MATRIX, 648, 648, nil)

panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x18 pc=0x12f2e63]

github.com/makiuchi-d/gozxing/datamatrix/encoder.(*EncoderContext).SetSymbolShape(...)
/go/src/github.com/makiuchi-d/gozxing/datamatrix/encoder/encoder_context.go:42
github.com/makiuchi-d/gozxing/datamatrix/encoder.EncodeHighLevel(0x13ed327, 0x4, 0x0, 0x0, 0x0, 0xc0001024b0, 0x34, 0xc000000076, 0xc0000b4078, 0x10c2240)
/go/src/github.com/makiuchi-d/gozxing/datamatrix/encoder/high_level_encoder.go:116 +0x1a3
github.com/makiuchi-d/gozxing/datamatrix.(*DataMatrixWriter).Encode(0x172ad30, 0x13ed327, 0x4, 0x5, 0x288, 0x288, 0x0, 0x0, 0x0, 0x140695a)
/go/src/github.com/makiuchi-d/gozxing/datamatrix/datamatrix_writer.go:61 +0x2ac
main.createRPImageContext(0x13ef3bd, 0x9, 0x0, 0x829749600, 0x0, 0x140695a, 0x60, 0x140695a, 0x60, 0x140695a, ...)

Implement QRCodeWriter

Dependencies:

NotFoundException: startSize = 0

when i use to scan barcode , it show err : NotFoundException: startSize = 0

can it scan barcode ?

but i can use online scan the result, https://zxing.org/w/decode.jspx, below is my picture,, thks

Implement qrcode.decoder.Decoder

This issue related to #1

Dependencies of qrcode.decoder.Decoder:

Code128 - Problem with FNC1/FNC2/FNC3

I need to play with Code128 and FNC3, but ... facing some troubles...

From the sources, I understand my code should look like :

        ...
	data := "\u00f3FOO"
	writer := oned.NewCode128Writer()
	bmx, err := writer.Encode(data, gozxing.BarcodeFormat_CODE_128, w, h, nil)
	if err != nil {
		fmt.Printf("Encoder error : %s\n", err)
                return err
	}
	...

With the code above, I get an error like : Bad character in input: 195

I had deeper look to code128 encoder and I suspect a bug in this area:

	for i := 0; i < length; i++ {
		c := contents[i]
		switch c {
		case code128ESCAPE_FNC_1, code128ESCAPE_FNC_2, code128ESCAPE_FNC_3, code128ESCAPE_FNC_4:
			break
		default:
			if c > 127 {
				// support for FNC4 isn't implemented, no full Latin-1 character set available at the moment
				return nil, gozxing.NewWriterException(
					"IllegalArgumentException: Bad character in input: %v", c)
			}
		}
	}

With traces inserted, none of the case code128ESCAPE_FNC_x are hit.

I suspect a kind of problem like in the playground : https://play.golang.org/p/cfPXCJsBN3a

Implement DataMatrixReader

dependencies:

Implement QRCodeMultiReader

multi.qrcode.QRCodeMultiReader
- multi.MultipleBarcodeReader
- multi.qrcode.detector.MultiDetector
multi.MultipleBarcodeReader
multi.qrcode.detector.MultiDetector
- multi.qrcode.detector.MultiFinderPatternFinder
multi.qrcode.detector.MultiFinderPatternFinder

Cannot decode qr code image

Hi, I have a problem with decode this image that contains qr code

My code is the follow and i can decode the image with online zxing web app.

func qrDecoder(localQrPath string) (*gozxing.Result,error) {
	// open and decode image file
	file, err := os.Open(localQrPath)
	if err != nil {
		return nil,err
	}
	img, _, err := image.Decode(file)
	if err != nil {
		return nil,err
	}
	src := gozxing.NewLuminanceSourceFromImage(img)
	// prepare BinaryBitmap
	bmp, err := gozxing.NewBinaryBitmap(gozxing.NewGlobalHistgramBinarizer(src))
	if err != nil {
		return nil,err
	}
	// decode image
	hints :=  map[gozxing.DecodeHintType]interface{}{
		//gozxing.EncodeHintType_ERROR_CORRECTION: decoder.ErrorCorrectionLevel_L,
		gozxing.DecodeHintType_TRY_HARDER: true,
		gozxing.DecodeHintType_POSSIBLE_FORMATS: []gozxing.BarcodeFormat{
			gozxing.BarcodeFormat_QR_CODE },
	}
	qrReader := qrcode.NewQRCodeReader()
	return qrReader.Decode(bmp, hints)
}

It return "image: unknown format" error.

not support large image

raw qrcode

https://github.com/makiuchi-d/gozxing

when size large then 4000x4000 return "NotFoundException: startSize = x:"

Implement ITFWriter

panic: runtime error: invalid memory address or nil pointer dereference

panic: runtime error: invalid memory address or nil pointer dereference
[signal 0xc0000005 code=0x0 addr=0x20 pc=0x4b60be]

goroutine 1 [running]:
github.com/makiuchi-d/gozxing.NewLuminanceSourceFromImage(0x0, 0x0, 0xc00007e070, 0x0)
C:/src/go_work/src/github.com/makiuchi-d/gozxing/go_image_luminance_source.go:19 +0x3e
github.com/makiuchi-d/gozxing.NewBinaryBitmapFromImage(0x0, 0x0, 0x0, 0x0, 0x0)
C:/src/go_work/src/github.com/makiuchi-d/gozxing/go_image_luminance_source.go:10 +0x40
main.main()
C:/src/go_work/src/learning/qrcode.go:36 +0x85
exit status 2


package main

import (
	"fmt"
	"image"
	_ "image/jpeg"
	"os"

	"github.com/makiuchi-d/gozxing"
	"github.com/makiuchi-d/gozxing/qrcode"
)

func main() {
	// open and decode image file
	file, _ := os.Open("qr.png")
	img, _, _ := image.Decode(file)

	// prepare BinaryBitmap
	bmp, _ := gozxing.NewBinaryBitmapFromImage(img)

	// decode image
	qrReader := qrcode.NewQRCodeReader()
	result, _ := qrReader.Decode(bmp, nil)

	fmt.Println(result)
}

QRCodeReader sometimes fails to extract a qr code from an image

The QRCodeReader fails to extract the QR code from the attached image:

It responds with a NotFoundException
Go snippet:

...
img, _, _ := image.Decode(file)
bmp, _ := gozxing.NewBinaryBitmapFromImage(img)
qrReader := qrcode.NewQRCodeReader()
result, err := qrReader.Decode(bmp, nil)
...

The Java equivalent (https://github.com/zxing/zxing) on the other hand is able to do it
Java snippet:

...
LuminanceSource source = new BufferedImageLuminanceSource(image);
BinaryBitmap bitmap = new BinaryBitmap(new GlobalHistogramBinarizer(source));
Reader reader = new QRCodeReader();
Result theResult = reader.decode(bitmap, null);
...

                encoder := qrcode.NewQRCodeWriter()
		btmtrx, err := encoder.Encode(yearInt+"|"+nanoId, gozxing.BarcodeFormat_QR_CODE, 300, 300, nil)
		finalBuf := bytes.NewBuffer(nil)
		_ = png.Encode(finalBuf, btmtrx)
		ctx.SetStatusCode(200)
		ctx.Response.Header.Set("Content-disposition", "attachment; filename=qrcode.png")
		ctx.SetContentType("application/octet-stream")
		ctx.SetBody(finalBuf.Bytes())

After downloaded, the file cannot be open.

One extra byte here:

00000000: c289 504e 470d 0a1a 0a00 0000 0d49 4844  ..PNG........IHD

The binwalk result is:

mypc% binwalk /tmp/h1.png

DECIMAL       HEXADECIMAL     DESCRIPTION
--------------------------------------------------------------------------------
1             0x1             PNG image, 300 x 300, 8-bit grayscale, non-interlaced

After stripped the first extra byte, the file is attached here.

ChecksumException

IMG: https://cleanshot-cloud-fra.s3.eu-central-1.amazonaws.com/media/30941/ovdYic7GS7UeQll6fhoICctwnnUgTaV2UQGKkIKm.jpeg?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Security-Token=IQoJb3JpZ2luX2VjENX%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaDGV1LWNlbnRyYWwtMSJHMEUCIQDjEWJGzbm9%2FZ%2Bk1166MiIr8u71RCrXd2Dik25bG4%2FFOwIgKY4tj0QvnlgkMlnFkEkATeDmrUs6RRXxt6qNAt9vt1QqqgII%2Fv%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FARAAGgw5MTk1MTQ0OTE2NzQiDHt7zmVxZUUHqmpYEyr%2BAbcew%2Bs%2F4ZuK6MXExwLIPeQqyQwgdiPRmmbFdy%2Fc%2FsCa4jvkG%2FedVnrDj1V06dhJkT%2B7Sp4UXlr4gg%2F5nRgErmhjZxaALFUqCjcVGKaNjXKucVIj0EO8LJk%2BsWvlSdY32GjNe44YHaLtQ26I%2B7Kk8o5lF%2B8NrXOowtJu8ec2%2B6KDRXB8wZcb%2BKbLzU5DRndynqcFC8Zis0KrYavThQssJ8YKT%2FWaBvrLzmqOzkaCFFjrZ9eCv9nw07GYbu8O4Vt876UuJlWRpWMiSaQDOXHUT6DGxAfkiMIFNLOx2F7Uk8B1w3q8js7fOAP7XKbef9O57jpIaMb8mxk0AYEaUoJlMNmZpJYGOpoBGQrIUmWfrDFTxKO99rAe2VSeTTtLmRPEq8scBj%2F5HSijSAHBq4x4d06jNwbr55ITwp%2F0hgxoTwNxPGePpX6VUouCqeMYGFjcMljahdOHKA7SvqCIgT76Sefq7zpQmZAWR2TJgkSAVga3PYZoR373AIhivjvNw7gV7frMUY0UPUpp7h9yCyn67eRCrAH3FigA36fcDe7soW4idQ%3D%3D&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=ASIA5MF2VVMNJWT2MZHD%2F20220709%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Date=20220709T054206Z&X-Amz-SignedHeaders=host&X-Amz-Expires=300&X-Amz-Signature=50c4f03dc59f8ba3dbf1148ea6561ba97728b137ef3bfd14c7b86a1725912bf0

err = ChecksumException

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