tuotoo / qrcode

qrcode scanner ( decoder ) by golang 二维码扫描识别

QR Code Decoder by Golang

This Project is Developing.

Plan

1. 动态二值化:
2. 提升图片扫描的速度 OK
3. 修复标线取值 OK
4. 容错码纠正数据 OK
5. 数据编码方式
   Numbert
   alphanumeric OK
   8-bit byte OK
   Kanji
6. 识别各角度倾斜的二维码

Example

fi, err := os.Open("qrcode.png")
if err != nil{
    logger.Println(err.Error())
    return
}
defer fi.Close()
qrmatrix, err := qrcode.Decode(fi)
if err != nil{
    logger.Println(err.Error())
    return
}
logger.Println(qrmatrix.Content)

qrcode's Issues

拍照的二维码，无法识别。打算支持吗？挺期待。

无法识别小程序码

https://developers.weixin.qq.com/miniprogram/dev/OpenApiDoc/qrcode-link/qr-code/getUnlimitedQRCode.html
利用这个生成的小程序，识别不了
not found error correction level and mask

好多都无法识别!!!

我想识别支付宝图片里面的二维码, 都无法识别, 只能用来识别只有二维码的情况, 带点边框就不行了

扫描出的文本最后会多一位 而且每次都是 数字3

runtime error reported when decoding the give image

runtime error: invalid memory address or nil pointer dereference
http://sm168.com/uploadfile/2018/1120/20181120043843357.png

panic: lost PositionDetectionPattern

When the white in the image is adjusted to be transparent, it can not be resolved

github.com/tuotoo/qrcode.NewPositionDetectionPattern(0xc04209b8b8, 0x0, 0x0, 0x0)
    E:/Work/GoLib/src/github.com/tuotoo/qrcode/qrcode.go:175 +0x598
github.com/tuotoo/qrcode.DecodeImg(0x5b3e80, 0xc0420460c0, 0x0, 0x0, 0x0)

image: unknown format

func decode(writer http.ResponseWriter, request *http.Request) {
	imgUrl := request.URL.Query().Get("url")

	resp, err := http.Get(imgUrl)
	if err != nil {
		http.Error(writer, err.Error(), http.StatusInternalServerError)
		return
	}
	defer resp.Body.Close()

	//i, _, err := image.Decode(resp.Body)
	//if err != nil {
	//	log.Fatal(err)
	//}
	//fmt.Println(i.Bounds())

	qrMatrix, err := qrcode.Decode(request.Body)
	if err != nil {
		http.Error(writer, err.Error(), http.StatusInternalServerError)
		return
	}

	writer.Write([]byte(qrMatrix.Content))
}

This return an error: image: unknown format

lost Position Detection Pattern

raw string:

1234

return "lost Position Detection Pattern"

上传一张非二维码的图片报错

2018/09/21 19:35:58 /code/uploadfile/src/github.com/tuotoo/qrcode/qrcode.go:264: /code/uploadfile/src/github.com/tuotoo/qrcode/qrcode.go 698 open groups/groups0.png: no such file or directory

panic: not found errorcorrectionlevel and mask

使用其他网站在线解码正常.

panic: not found errorcorrectionlevel and mask

goroutine 1 [running]:
github.com/tuotoo/qrcode.(*Matrix).FormatInfo(0xc04209c370, 0x0, 0x1a)
	F:/golang/get/src/github.com/tuotoo/qrcode/qrcode.go:78 +0x232
github.com/tuotoo/qrcode.Decode(0x7dafe0, 0xc042a18500, 0x63067e, 0x3, 0x630438)
	F:/golang/get/src/github.com/tuotoo/qrcode/qrcode.go:879 +0x19f
main.main()
	F:/golang/my/src/qr/mian.go:114 +0x676

项目还是关了吧，挺耽误别人时间的。。。。

没几个能识别的

qrcode.decode时出错

2019/10/13 08:01:25 [Recovery] 2019/10/13 - 08:01:25 panic recovered:
runtime error: invalid memory address or nil pointer dereference
/usr/local/go/src/runtime/panic.go:82 (0x442480)
panicmem: panic(memoryError)
/usr/local/go/src/runtime/signal_unix.go:390 (0x4422af)
sigpanic: panicmem()

decode errr

1.qrcode12.png，qrcode2.png，qrcode3.png 解码失败；
2.微信二维码解码失败；
3.json文本会发生解码失败。

panic: not found errorcorrectionlevel and mask

qr image url：https://s1.ax1x.com/2018/01/25/p7LQa9.jpg

goroutine 1 [running]:
github.com/tuotoo/qrcode.(*Matrix).FormatInfo(0xc0422a2000, 0x0, 0x32)
        E:/Work/GoLib/src/github.com/tuotoo/qrcode/qrcode.go:78 +0x232
github.com/tuotoo/qrcode.Decode(0x3514ff0, 0xc042156140, 0xc042156140, 0x3514ff0, 0xc042156140)
        E:/Work/GoLib/src/github.com/tuotoo/qrcode/qrcode.go:879 +0x18b
main.InitSSNode(0x765920, 0x29, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, ...)
        E:/Work/GoWorkSpace/src/Orefa/ss/nutgeek/main.go:94 +0x115
main.main()
        E:/Work/GoWorkSpace/src/Orefa/ss/nutgeek/main.go:83 +0x52

image: unknown format when file is jfif

无法读取 jfif 文件

image.Decode 原生就不支持这种文件格式，这个有办法支持一下么

panic: runtime error: index out of range

使用其他网站在线解码正常.

panic: runtime error: index out of range

goroutine 1 [running]:
github.com/tuotoo/qrcode.(*Matrix).At(...)
	F:/golang/get/src/github.com/tuotoo/qrcode/qrcode.go:51
github.com/tuotoo/qrcode.DecodeImg(0x7df5a0, 0xc04203a180, 0x0, 0x0, 0x0)
	F:/golang/get/src/github.com/tuotoo/qrcode/qrcode.go:859 +0x18c0
github.com/tuotoo/qrcode.Decode(0x7dafe0, 0xc042fb9600, 0x63079e, 0x3, 0x630558)
	F:/golang/get/src/github.com/tuotoo/qrcode/qrcode.go:872 +0xdf
main.main()
	F:/golang/my/src/qr/mian.go:114 +0x69d

Example png in memory

Hello, Thanks for the work!
I'm here to leave an example of a read using an image.RGBA in memory, The following is the code of Image for bytes.Reader, reading directly from memory:

package main

import (
	"bytes"
	"fmt"
	"image"
	"image/png"
	"github.com/kbinani/screenshot"
	"github.com/tuotoo/qrcode"
)

func main() {

	img, err := screenshot.CaptureRect(image.Rect(0, 0, 40, 40))
	if err != nil {
		panic(err)
	}

	buff := new(bytes.Buffer)

	// encode image to buffer
	err = png.Encode(buff, img)
	if err != nil {
		fmt.Println("failed to create buffer", err)
	}

	// convert buffer to reader
	reader := bytes.NewReader(buff.Bytes())

	qrmatrix, err := qrcode.Decode(reader)

	if err != nil {
		fmt.Println(err.Error())
		return
	}

	fmt.Println("contend:")
	fmt.Println(qrmatrix.Content)
}

是不是不支持中文?

有中文的二维码图片直接报错

☁  run  go run .
2020/04/09 21:31:56 not found error correction level and mask