Go package for OCR (Optical Character Recognition), by using Tesseract C++ library

Last update: Dec 28, 2022

Overview

gosseract OCR

Golang OCR package, by using Tesseract C++ library.

OCR Server

Do you just want OCR server, or see the working example of this package? Yes, there is already-made server application, which is seriously easy to deploy!

👉 https://github.com/otiai10/ocrserver

Example

package main

import (
	"fmt"
	"github.com/otiai10/gosseract/v2"
)

func main() {
	client := gosseract.NewClient()
	defer client.Close()
	client.SetImage("path/to/image.png")
	text, _ := client.Text()
	fmt.Println(text)
	// Hello, World!
}

Install

tesseract-ocr, including library and headers
go get -t github.com/otiai10/gosseract

Check Dockerfile for more detail of installation, or you can just try by docker run -it --rm otiai10/gosseract.

Test

In case you have tesseract-ocr on your local, you can just hit

% go test .

Otherwise, if you DON'T want to install tesseract-ocr on your local, kick ./test/runtime which is using Docker and Vagrant to test the source code on some runtimes.

% ./test/runtime --driver docker
% ./test/runtime --driver vagrant

Check ./test/runtimes for more information about runtime tests.

Issues

https://github.com/otiai10/gosseract/issues

Comments

Installation Failure on Windows 7
Summary

Installation Failure on Windows 7 λ go get -t github.com/otiai10/gosseract

github.com/otiai10/gosseract

tessbridge.cpp:5:10: fatal error: tesseract/baseapi.h: No such file or directory #include <tesseract/baseapi.h> ^~~~~~~~~~~~~~~~~~~~~ compilation terminated.

Reproducibility

Yes

Reproducility Frequency

100%

Reproducible Dockerfile

FROM your-os:your-version # Describe how to reproduce your problem # on your environment

Otherwise, describe how to reproduce

Install GO lan

Install GCC (64 Bit Compiler)

Install GIT

Install Tesseract from this site https://digi.bib.uni-mannheim.de/tesseract/tesseract-ocr-setup-3.05.02-20180621.exe

Execute λ go get -t github.com/otiai10/gosseract

github.com/otiai10/gosseract

tessbridge.cpp:5:10: fatal error: tesseract/baseapi.h: No such file or directory #include <tesseract/baseapi.h> ^~~~~~~~~~~~~~~~~~~~~ compilation terminated.

Environment

Windows 7

uname -a

go env

C:\Users\33133 λ go env set GOARCH=amd64 set GOBIN= set GOCACHE=C:\Users\33133\AppData\Local\go-build set GOEXE=.exe set GOHOSTARCH=amd64 set GOHOSTOS=windows set GOOS=windows set GOPATH=C:\Users\33133\go set GORACE= set GOROOT=C:\Go set GOTMPDIR= set GOTOOLDIR=C:\Go\pkg\tool\windows_amd64 set GCCGO=gccgo set CC=gcc set CXX=g++ set CGO_ENABLED=1 set CGO_CFLAGS=-g -O2 set CGO_CPPFLAGS= set CGO_CXXFLAGS=-g -O2 set CGO_FFLAGS=-g -O2 set CGO_LDFLAGS=-g -O2 set PKG_CONFIG=pkg-config set GOGCCFLAGS=-m64 -mthreads -fmessage-length=0 -fdebug-prefix-map=C:\Users\33133\AppData\Local\Temp\go-build238513982=/tmp/go-build -gno-record-gcc-switches

C:\Users\33133 λ

go version

λ go version go version go1.10.3 windows/amd64

tesseract --version

C:\Program Files (x86)\Tesseract-OCR>tesseract --version tesseract 3.05.02 leptonica-1.75.3 libgif 5.1.4 : libjpeg 8d (libjpeg-turbo 1.5.3) : libpng 1.6.34 : libtiff 4.0. 9 : zlib 1.2.11 : libwebp 0.6.1 : libopenjp2 2.2.0

C:\Program Files (x86)\Tesseract-OCR>
opened by vsarin 27

'tesseract/baseapi.h' file not found

% go test ./...
# github.com/otiai10/gosseract/tesseract
tesseract/tess.cpp:1:10: fatal error: 'tesseract/baseapi.h' file not found
FAIL    github.com/otiai10/gosseract [build failed]

question

opened by otiai10 25

Keep printing a blank with no error

package main

import ( "fmt" "github.com/otiai10/gosseract" )

func main() { client := gosseract.NewClient() defer client.Close() client.SetImage("path/to/image.png") text, _ := client.Text() fmt.Println(text) // Hello, World! }

I am using this code and run it in docker but still getting a blank without error
need more information

opened by gradygabriel10 10
tessbridge.cpp:5:10: fatal error: leptonica/allheaders.h: No such file or directory
Summary

Installation failed on win 10 x64 by go get -t github.com/otiai10/gosseract $ go get -t github.com/otiai10/gosseract

github.com/otiai10/gosseract

tessbridge.cpp:5:10: fatal error: leptonica/allheaders.h: No such file or directory #include <leptonica/allheaders.h> ^~~~~~~~~~~~~~~~~~~~~~~~ compilation terminated.

I don't know about header files,. How do I install them on windows? leptonica/allheaders.h This is header files?

Reproducibility

Reproducibility Frequency

100%

Reproducible Dockerfile

FROM your-os:your-version # Describe how to reproduce your problem # on your environment

Otherwise, describe how to reproduce

Install GO lan Install GCC (64 Bit Compiler) Install GIT Install Tesseract from this site https://digi.bib.uni-mannheim.de/tesseract/tesseract-ocr-setup-3.05.02-20180621.exe go get -t github.com/otiai10/gosseract

Environment

go env

$ go env set GO111MODULE= set GOARCH=amd64 set GOBIN= set GOCACHE=C:\Users\VULCAN\AppData\Local\go-build set GOENV=C:\Users\VULCAN\AppData\Roaming\go\env set GOEXE=.exe set GOFLAGS= set GOHOSTARCH=amd64 set GOHOSTOS=windows set GONOPROXY= set GONOSUMDB= set GOOS=windows set GOPATH=C:\Go\go\bin set GOPRIVATE= set GOPROXY=https://proxy.golang.org,direct set GOROOT=C:\Go set GOSUMDB=sum.golang.org set GOTMPDIR= set GOTOOLDIR=C:\Go\pkg\tool\windows_amd64 set GCCGO=gccgo set AR=ar set CC=gcc set CXX=g++ set CGO_ENABLED=1 set GOMOD= set CGO_CFLAGS=-g -O2 set CGO_CPPFLAGS= set CGO_CXXFLAGS=-g -O2 set CGO_FFLAGS=-g -O2 set CGO_LDFLAGS=-g -O2 set PKG_CONFIG=pkg-config set GOGCCFLAGS=-m64 -mthreads -fmessage-length=0 -fdebug-prefix-map=C:\Users\VULCAN\AppData\Local\Temp\go-build610875910=/tmp/go-build -gno-record-gcc-switches

go version

$ go version go version go1.13.5 windows/amd64

tesseract --version ```$ tesseract --version tesseract 3.05.02 leptonica-1.75.3 libgif 5.1.4 : libjpeg 8d (libjpeg-turbo 1.5.3) : libpng 1.6.34 : libtiff 4.0.9 : zlib 1.2.11 : libwebp 0.6.1 : libopenjp2 2.2.0
opened by QQ3544291 10

Leaks /dev/ttysXXX file handles even when Close() is manually called

Summary

This is a real issue for me as I am capturing images via security camera and every frame runs through Tesseract in real time.

While running in a loop over files, OpenCV video frame, or as a web service, gosseract is opening a new /dev/ttys002 (or /dev/pts/004) every time an image is parsed. This eventually leads to a situation of running out of allowed file handlers.

I have attached the example Go projects that have the issue and a C++ version that does not.

Reproducibility

Always

Environment

macOS 10.14, Tesseract 4.1.0 Ubuntu 19.01, Tesseract 4.0

GO111MODULE=""
GOARCH="amd64"
GOBIN=""
GOCACHE="/Users/tbruno/Library/Caches/go-build"
GOENV="/Users/tbruno/Library/Application Support/go/env"
GOEXE=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="darwin"
GONOPROXY=""
GONOSUMDB=""
GOOS="darwin"
GOPATH="/Users/tbruno/Projects/GolandProjects/go"
GOPRIVATE=""
GOPROXY="https://proxy.golang.org,direct"
GOROOT="/usr/local/Cellar/go/1.13.4/libexec"
GOSUMDB="sum.golang.org"
GOTMPDIR=""
GOTOOLDIR="/usr/local/Cellar/go/1.13.4/libexec/pkg/tool/darwin_amd64"
GCCGO="gccgo"
AR="ar"
CC="clang"
CXX="clang++"
CGO_ENABLED="1"
GOMOD=""
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -m64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=/var/folders/2r/vy9wb4w90snd6wwv06ts6rth0000gn/T/go-build449183315=/tmp/go-build -gno-record-gcc-switches -fno-common"

go version go1.13.4 darwin/amd64

tesseract 4.1.0
 leptonica-1.78.0
  libgif 5.1.4 : libjpeg 9c : libpng 1.6.37 : libtiff 4.1.0 : zlib 1.2.11 : libwebp 1.0.3 : libopenjp2 2.3.1
 Found AVX512BW
 Found AVX512F
 Found AVX2
 Found AVX
 Found SSE

Examples (I'm using the same jpg file, but this happens even if a new file is opened and also happens with SetImageFromBytes)

func main() {
	client := gosseract.NewClient()
	for {
		client.SetImage("/Users/tbruno/test.jpg")
		text, _ := client.Text()
		fmt.Println(text)
	}
	client.Close()
}

func main() {
	for {
		client := gosseract.NewClient()
		client.SetImage("/Users/tbruno/test.jpg")
		text, _ := client.Text()
		fmt.Println(text)
		client.Close()
	}
}

TessTester-ClientInLoopGo.zip TessTester-SingleClientGo.zip TessApi-NoLeakCpp.zip

bug

opened by tebruno99 10

Fix/add tessdata prefix

Hi.

I've added an ability to provide different TessdataPrefix directly from go code with default value equal to environment TESSDATA_PREFIX. Requesting for a review, thanks.

Seems like my solution only works with latest tesseract and only on linux (different was not tested). We should somehow define default directory for models for different tesseract versions.

opened by awskii 9
Init only when required (perfs)
I benchmarked my app and seen that 90% of the CPU time is lost in "init()".

With this code I keep the instance open and perform multiple recognition on it, if a configuration change requires to init again, I flag the instance to rerun init

What do you think about it?

Details

This is a typical use of gosseract to extract text, in a sample program (profiling included):

package main import ( "bytes" "image/png" "gocv.io/x/gocv" "github.com/openrm/gosseract" "github.com/pkg/profile" ) func GetTextFromImage(img *gocv.Mat, client *gosseract.Client) (string, error) { buf := new(bytes.Buffer) finalImage, err := img.ToImage() png.Encode(buf, finalImage) client.SetImageFromBytes(buf.Bytes()) client.SetPageSegMode(gosseract.PSM_SINGLE_BLOCK) out, err := client.Text() if err != nil { return "", err } return out, nil } func main() { defer profile.Start().Stop() client := gosseract.NewClient() defer client.Close() client.Languages = []string{"jpn"} img := gocv.IMRead("1.png", gocv.IMReadColor) for i := 0; i < 20; i++ { GetTextFromImage(&img, client) } }

With the code above, I get the following result with go profiling:

As you can see, over the 12 seconds spent in the program, 11 are caused by repeated calls to init.

With the proposed changes in this PR, the profiling is now like this:

Notes

SetConfigFile and SetLanguage cause the program to init again

SetWhitelist, SetBlacklist, DisabledOutput and SetVariable make internal call to setVariablesToInitializedAPI if init has already been called
opened by PuKoren 9
cannot find package "github.com/otiai10/gosseract/v2"
Hello, I have installed the package using go get github.com/otiai10/gosseract and imported it in my package: "github.com/otiai10/gosseract/v2" as per instructions.

Summary

I get this compile time error:

vendor/app/shared/spamcheck/spamcheck.go:12:2: cannot find package "github.com/otiai10/gosseract/v2" in any of: /home/me/go/src/myapp/vendor/github.com/otiai10/gosseract/v2 (vendor tree) /usr/local/go/src/github.com/otiai10/gosseract/v2 (from $GOROOT) /home/me/go/src/github.com/otiai10/gosseract/v2 (from $GOPATH)

Environment

Ubuntu 18.08

uname -a

Linux pc5 5.3.0-28-generic #30~18.04.1-Ubuntu SMP Fri Jan 17 06:14:09 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux

go env

GO111MODULE="" GOARCH="amd64" GOBIN="" GOCACHE="/home/me/.cache/go-build" GOENV="/home/me/.config/go/env" GOEXE="" GOFLAGS="" GOHOSTARCH="amd64" GOHOSTOS="linux" GONOPROXY="" GONOSUMDB="" GOOS="linux" GOPATH="/home/me/go" GOPRIVATE="" GOPROXY="https://proxy.golang.org,direct" GOROOT="/usr/local/go" GOSUMDB="sum.golang.org" GOTMPDIR="" GOTOOLDIR="/usr/local/go/pkg/tool/linux_amd64" GCCGO="gccgo" AR="ar" CC="gcc" CXX="g++" CGO_ENABLED="1" GOMOD="" CGO_CFLAGS="-g -O2" CGO_CPPFLAGS="" CGO_CXXFLAGS="-g -O2" CGO_FFLAGS="-g -O2" CGO_LDFLAGS="-g -O2" PKG_CONFIG="pkg-config" GOGCCFLAGS="-fPIC -m64 -pthread -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build702738196=/tmp/go-build -gno-record-gcc-switches"

go version

go1.13.6 linux/amd64

tesseract --version

tesseract 4.0.0-beta.1 leptonica-1.75.3 libgif 5.1.4 : libjpeg 8d (libjpeg-turbo 1.5.2) : libpng 1.6.34 : libtiff 4.0.9 : zlib 1.2.11 : libwebp 0.6.1 : libopenjp2 2.3.0

Found AVX2 Found AVX Found SSE

Appreciate your help to fix this.
opened by themrkumar 8

macOS compile freebsd binary file failed

Summary

I'm using macOS 10.14.6 and going to compile binary file for FreeBSD 11.3, and build failed, show message: undefined: gosseract.NewClient.

Reproducibility

Reproducibility Frequency

100%

Environment

Darwin Kernel Version 18.7.0

GO111MODULE=""
GOARCH="amd64"
GOBIN=""
GOCACHE="/Users/frankb/Library/Caches/go-build"
GOENV="/Users/frankb/Library/Application Support/go/env"
GOEXE=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="darwin"
GONOPROXY=""
GONOSUMDB=""
GOOS="darwin"
GOPATH="/Volumes/home/Development files/Go files/"
GOPRIVATE=""
GOPROXY="https://proxy.golang.org,direct"
GOROOT="/usr/local/go"
GOSUMDB="sum.golang.org"
GOTMPDIR=""
GOTOOLDIR="/usr/local/go/pkg/tool/darwin_amd64"
GCCGO="gccgo"
AR="ar"
CC="clang"
CXX="clang++"
CGO_ENABLED="1"
GOMOD=""
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -m64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=/var/folders/0b/ntd9fcqx6xn6nt3gpv4yndm40000gn/T/go-build712170545=/tmp/go-build -gno-record-gcc-switches -fno-common"

go version go1.13 darwin/amd64

tesseract 4.1.0
 leptonica-1.78.0
  libgif 5.1.4 : libjpeg 9c : libpng 1.6.37 : libtiff 4.0.10 : zlib 1.2.11 : libwebp 1.0.3 : libopenjp2 2.3.1
 Found AVX2
 Found AVX
 Found SSE

Source

package main

import (
	"fmt"
	"github.com/otiai10/gosseract"
)

func main() {
	client := gosseract.NewClient()
	defer client.Close()
	client.SetLanguage("deu");
	client.SetImage("test.png")
	text, _ := client.Text()
	fmt.Println(text)
}

Compile command

env GOOS=freebsd GOARCH=amd64 go build ocrtest.go

Error Message

# command-line-arguments
./ocrtest.go:9:12: undefined: gosseract.NewClient

opened by frankble 8

macOS complie linux binary file failed
Summary

I'm using macOS and going to compile binary file for centos7.1, and build failed, show message: undefined: gosseract.NewClient. Thanks.

Reproducibility

Reproducility Frequency

100%

Environment

uname -a

Darwin AllenChen-MacBookPro.local 18.2.0 Darwin Kernel Version 18.2.0: Fri Oct 5 19:41:49 PDT 2018; root:xnu-4903.221.2~2/RELEASE_X86_64 x86_64

go env

GOARCH="amd64" GOBIN="/Users/allen/Documents/go/bin" GOCACHE="/Users/allen/Library/Caches/go-build" GOEXE="" GOFLAGS="" GOHOSTARCH="amd64" GOHOSTOS="darwin" GOOS="darwin" GOPATH="/Users/allen/Documents/go" GOPROXY="" GORACE="" GOROOT="/usr/local/go" GOTMPDIR="" GOTOOLDIR="/usr/local/go/pkg/tool/darwin_amd64" GCCGO="gccgo" CC="clang" CXX="clang++" CGO_ENABLED="1" GOMOD="" CGO_CFLAGS="-g -O2" CGO_CPPFLAGS="" CGO_CXXFLAGS="-g -O2" CGO_FFLAGS="-g -O2" CGO_LDFLAGS="-g -O2" PKG_CONFIG="pkg-config" GOGCCFLAGS="-fPIC -m64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=/var/folders/s6/mqbnh2yn52b5glrvhk53jyxh0000gn/T/go-build032873897=/tmp/go-build -gno-record-gcc-switches -fno-common"

go version

go version go1.11 darwin/amd64

tesseract --version

tesseract 4.0.0 leptonica-1.76.0 libjpeg 9c : libpng 1.6.35 : libtiff 4.0.9 : zlib 1.2.11 Found AVX Found SSE
opened by czh0318 8

tesseract/baseapi.h: No such file or directory

I'd like to use tesseract with go on Windows 7.

During the installation process, as stated in the docs I execute

c:\go\src\proj>go get github.com/otiai10/gosseract
# github.com/otiai10/gosseract/tesseract
C:\go\src\github.com\otiai10\gosseract\tesseract\tess.cpp:1:31: fatal error: tesseract/baseapi.h: No such file or directory
 #include <tesseract/baseapi.h>
                               ^
compilation terminated.

And by searching the file system for the header file baseapi.h, I cannot find it.

How can I solve this? Thank you

question

opened by tobiassoltermann 8

gosseract finds no text where tesseract does

Summary

I am running tesseract and gosseract on the same image, a single line of text. Tesseract finds the text, gosseract does not.

Reproducibility

Reproducibility Frequency

100%

Run tesseract d2.pbm - --psm 13 and it will show the output
Run go run main.go and it will not show any output

go.mod:

module gosstest

go 1.19

require github.com/otiai10/gosseract/v2 v2.4.0

main.go:

package main

import (
	"fmt"
	"os"

	"github.com/otiai10/gosseract/v2"
)

func main() {
	const (
		want     = "BPJAZGAP"
		filename = "d2.pbm"
	)
	buf, err := os.ReadFile("d2.pbm")
	if err != nil {
		fmt.Fprintf(os.Stderr, "error reading %q: %v\n", filename, err)
	}

	fmt.Fprintln(os.Stderr, gosseract.Version())

	ocr := gosseract.NewClient()
	defer ocr.Close()
	ocr.SetPageSegMode(gosseract.PSM_RAW_LINE) // --psm 13
	ocr.SetImageFromBytes(buf)
	got, err := ocr.Text()
	if err != nil {
		fmt.Fprintf(os.Stderr, "%v\n", err)
	}

	if want != got {
		fmt.Fprintf(os.Stderr, "want %q but got %q", want, got)
	}

	fmt.Println(got)
}

d2.pbm:

P1 42 8
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 1 1 1 0 0 1 1 1 0 0 0 0 1 1 0 0 1 1 0 0 1 1 1 1 0 0 1 1 0 0 0 1 1 0 0 1 1 1 0 0 0
0 1 0 0 1 0 1 0 0 1 0 0 0 0 1 0 1 0 0 1 0 0 0 0 1 0 1 0 0 1 0 1 0 0 1 0 1 0 0 1 0 0
0 1 1 1 0 0 1 0 0 1 0 0 0 0 1 0 1 0 0 1 0 0 0 1 0 0 1 0 0 0 0 1 0 0 1 0 1 0 0 1 0 0
0 1 0 0 1 0 1 1 1 0 0 0 0 0 1 0 1 1 1 1 0 0 1 0 0 0 1 0 1 1 0 1 1 1 1 0 1 1 1 0 0 0
0 1 0 0 1 0 1 0 0 0 0 1 0 0 1 0 1 0 0 1 0 1 0 0 0 0 1 0 0 1 0 1 0 0 1 0 1 0 0 0 0 0
0 1 1 1 0 0 1 0 0 0 0 0 1 1 0 0 1 0 0 1 0 1 1 1 1 0 0 1 1 1 0 1 0 0 1 0 1 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Environment

Linux chieftec 6.0.15-300.fc37.x86_64 #1 SMP PREEMPT_DYNAMIC Wed Dec 21 18:33:23 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux

GO111MODULE=""
GOARCH="amd64"
GOBIN=""
GOCACHE="/home/jot/.cache/go-build"
GOENV="/home/jot/.config/go/env"
GOEXE=""
GOEXPERIMENT=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOINSECURE=""
GOMODCACHE="/home/jot/go/pkg/mod"
GONOPROXY=""
GONOSUMDB=""
GOOS="linux"
GOPATH="/home/jot/go"
[project.zip](https://github.com/otiai10/gosseract/files/10347142/project.zip)

GOPRIVATE=""
GOPROXY="direct"
GOROOT="/usr/lib/golang"
GOSUMDB="off"
GOTMPDIR=""
GOTOOLDIR="/usr/lib/golang/pkg/tool/linux_amd64"
GOVCS=""
GOVERSION="go1.19.4"
GCCGO="gccgo"
GOAMD64="v1"
AR="ar"
CC="gcc"
CXX="g++"
CGO_ENABLED="1"
GOMOD="/home/jot/work/gosseract/go.mod"
GOWORK=""
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -m64 -pthread -Wl,--no-gc-sections -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build1563688176=/tmp/go-build -gno-record-gcc-switches"

go version go1.19.4 linux/amd64

tesseract 5.2.0
 leptonica-1.82.0
  libgif 5.2.1 : libjpeg 6b (libjpeg-turbo 2.1.3) : libpng 1.6.37 : libtiff 4.4.0 : zlib 1.2.12 : libwebp 1.2.4
 Found AVX2
 Found AVX
 Found FMA
 Found SSE4.1

opened by jhinrichsen 1

CI on Windows
https://github.com/otiai10/gosseract/issues/251

https://github.com/otiai10/gosseract/issues/200

https://github.com/otiai10/gosseract/issues/240

https://github.com/otiai10/gosseract/issues/199

https://github.com/otiai10/gosseract/issues/132

https://github.com/otiai10/gosseract/issues/234

https://github.com/otiai10/gosseract/issues/215

https://github.com/otiai10/gosseract/issues/233

https://github.com/otiai10/gosseract/issues/223

https://github.com/otiai10/gosseract/issues/226

and more
opened by otiai10 0
Win11 compiler error
This text is generated based on ISSUE_TEMPLATE.md. The issue reporter must read and remove this block before submitting.

Summary

Go Compilation Error (in tessbridge.cpp:5): fatal error: leptonica/allheaders.h: No such file or directory

Reproducibility

Reproducibility Frequency

XX%

Reproducible Dockerfile

FROM your-os:your-version # Describe how to reproduce your problem # on your environment

Otherwise, describe how to reproduce

foo bar

spam ham

hoge fuga

Environment

uname -a

Windows 11

go env

set GO111MODULE=on set GOARCH=amd64 set GOBIN= set GOCACHE=C:\Users\Administrator\AppData\Local\go-build set GOENV=C:\Users\Administrator\AppData\Roaming\go\env set GOEXE=.exe set GOEXPERIMENT= set GOFLAGS= set GOHOSTARCH=amd64 set GOHOSTOS=windows set GOINSECURE= set GOMODCACHE=E:\Go\pkg\mod set GONOPROXY= set GONOSUMDB= set GOOS=windows set GOPATH=E:\Go set GOPRIVATE= set GOPROXY=https://goproxy.cn,direct set GOROOT=D:\Program Files\Go set GOSUMDB=sum.golang.org set GOTMPDIR= set GOTOOLDIR=D:\Program Files\Go\pkg\tool\windows_amd64 set GOVCS= set GOVERSION=go1.18.3 set GCCGO=gccgo set GOAMD64=v1 set AR=ar set CC=gcc set CXX=g++ set CGO_ENABLED=1 set GOMOD=E:\Go\src\ERMS\go.mod set GOWORK= set CGO_CFLAGS=-g -O2 set CGO_CPPFLAGS= set CGO_CXXFLAGS=-g -O2 set CGO_FFLAGS=-g -O2 set CGO_LDFLAGS=-g -O2 set PKG_CONFIG=pkg-config set GOGCCFLAGS=-m64 -mthreads -fmessage-length=0 -fdebug-prefix-map=C:\Users\ADMINI~1\AppData\Local\Temp\go-build2580212505=/tmp/go-build -gno-record-gcc-switches

go version

go version go1.18.3 windows/amd64

tesseract --version

tesseract v5.1.0.20220510 leptonica-1.78.0 libgif 5.1.4 : libjpeg 8d (libjpeg-turbo 1.5.3) : libpng 1.6.34 : libtiff 4.0.9 : zlib 1.2.11 : libwebp 0.6.1 : libopenjp2 2.3.0 Found AVX512BW Found AVX512F Found AVX2 Found AVX Found FMA Found SSE4.1 Found libarchive 3.5.0 zlib/1.2.11 liblzma/5.2.3 bz2lib/1.0.6 liblz4/1.7.5 libzstd/1.4.5 Found libcurl/7.77.0-DEV Schannel zlib/1.2.11 zstd/1.4.5 libidn2/2.0.4 nghttp2/1.31.0
opened by zzdboy 0

add a finalizer to close the client

If the developer forgets to call the close method after creating the client, it will cause a memory leak.

To avoid this, I refer to the method in os.File. By adding a finalizer, the Close method will be called when the client is unreachable and the developer haven't call the Close method neither.

Test

client.go

// NewClient construct new Client. It's due to caller to Close this client.
func NewClient() *Client {
	client := &Client{
		api:        C.Create(),
		Variables:  map[SettableVariable]string{},
		Trim:       true,
		shouldInit: true,
		Languages:  []string{"eng"},
	}
	// set a finalizer to close the client when it's unused and not closed by the user
	runtime.SetFinalizer(client, (*Client).Close)
	return client
}

// Close frees allocated API. This MUST be called for ANY client constructed by "NewClient" function.
func (client *Client) Close() (err error) {
	// defer func() {
	// 	if e := recover(); e != nil {
	// 		err = fmt.Errorf("%v", e)
	// 	}
	// }()
	fmt.Println("Closed")
	C.Clear(client.api)
	C.Free(client.api)
	if client.pixImage != nil {
		C.DestroyPixImage(client.pixImage)
		client.pixImage = nil
	}
	// no need for a finalizer anymore
	runtime.SetFinalizer(client, nil)
	return err
}

test code

func main() {
	runGgosseract()
	runtime.GC() // run a garbage collection
	time.Sleep(2 * time.Second)
	// see "Close" before "exit"
	fmt.Println("exit")
}

func runGgosseract() {
	client := gosseract.NewClient()
	client.SetImage("path/to/image.png")
	text, _ := client.Text()
	fmt.Println(text)
}

opened by yin1999 1

Fix the docker build to download project source files

The gosseract source files were not being downloaded during the Docker build process so the go test step was failing. Setting the environment variable fixes the issue and allows correct building of the docker image.

opened by mrisher23 1
failed to initialize TessBaseAPI with code -1:
This text is generated based on ISSUE_TEMPLATE.md. The issue reporter must read and remove this block before submitting.

Summary

I install gosseract at win10 . use MSYS2 with Mingw64 to install tesseract , leptonica module。 and finally install gosseract use command 'go get -t go get -t github.com/otiai10/gosseract/v2 '

when i build my test project success , eventually throw a exception : `failed to initialize TessBaseAPI with code -1: '

then I go to the install directory at go path , run the go test , also get the same error ： all_test.go:144 Expected to be <nil> But actual failed to initialize TessBaseAPI with code -1:

I can do nothing , becasue there are haven't any message with that code . pls help ! 3q !

Reproducibility

Reproducibility Frequency

100%

Reproducible Dockerfile

FROM your-os:your-version # Describe how to reproduce your problem # on your environment

Otherwise, describe how to reproduce

Environment

win10

uname -a

go env

go env

set GO111MODULE=auto set GOARCH=amd64 set GOBIN= set GOCACHE=C:\Users\langxli\AppData\Local\go-build set GOENV=C:\Users\langxli\AppData\Roaming\go\env set GOEXE=.exe set GOEXPERIMENT= set GOFLAGS= set GOHOSTARCH=amd64 set GOHOSTOS=windows set GOINSECURE= set GOMODCACHE=C:\Users\langxli\go\pkg\mod set GONOPROXY= set GONOSUMDB= set GOOS=windows set GOPATH=C:\Users\langxli\go;D:\work\brick\brick_app_project set GOPRIVATE= set GOPROXY=https://proxy.golang.org,direct set GOROOT=C:\Program Files\Go set GOSUMDB=sum.golang.org set GOTMPDIR= set GOTOOLDIR=C:\Program Files\Go\pkg\tool\windows_amd64 set GOVCS= set GOVERSION=go1.17 set GCCGO=gccgo set AR=ar set CC=gcc set CXX=g++ set CGO_ENABLED=1 set GOMOD=C:\Users\langxli\go\pkg\mod\github.com\otiai10\gosseract\[email protected]\go.mod set CGO_CFLAGS=-g -O2 set CGO_CPPFLAGS= set CGO_CXXFLAGS=-g -O2 set CGO_FFLAGS=-g -O2 set CGO_LDFLAGS=-g -O2 set PKG_CONFIG=pkg-config set GOGCCFLAGS=-m64 -mthreads -fmessage-length=0 -fdebug-prefix-map=D:\msys64\tmp\go-build2794601340=/tmp/go-build -gno-record-gcc-switches

go version # go version go version go1.17 windows/amd64

tesseract --version

tesseract --version

tesseract 4.1.1 leptonica-1.81.1 libgif 5.2.1 : libjpeg 8d (libjpeg-turbo 2.0.6) : libpng 1.6.37 : libtiff 4.3.0 : zlib 1.2.11 : libwebp 1.2.2 : libopenjp2 2.4.0
opened by langxlm 2

Releases(v2.3.1)

v2.3.1(Jan 4, 2021)

Source code(tar.gz)
Source code(zip)
v2.2.4(Jan 7, 2020)

Source code(tar.gz)
Source code(zip)
v2.2.3(Jan 6, 2020)

Source code(tar.gz)
Source code(zip)
v2.2.2(Jan 4, 2020)

Source code(tar.gz)
Source code(zip)
v2.2.0(Jun 20, 2018)

Source code(tar.gz)
Source code(zip)
v2.1.0(Feb 13, 2018)

Delete v1 directory
Source code(tar.gz)
Source code(zip)

Owner

Hiromu OCHIAI

🙋 ❤️ 🍣

GitHub Repository https://pkg.go.dev/github.com/otiai10/gosseract

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Related tags

Overview

gosseract OCR

OCR Server

Example

Install

Test

Issues

Comments

Summary

github.com/otiai10/gosseract

Reproducibility

Reproducility Frequency

Reproducible Dockerfile

github.com/otiai10/gosseract

Environment

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github.com/otiai10/gosseract

Reproducibility

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Reproducible Dockerfile

Environment

Summary

Reproducibility

Environment

Details

Notes

Summary

Environment

Summary

Reproducibility

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Environment

Source

Compile command

Error Message

Summary

Reproducibility

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Environment

Summary

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Environment

Summary

Reproducibility

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Environment

Test

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Reproducibility

Reproducibility Frequency

Reproducible Dockerfile

Environment

go env

tesseract --version

Releases(v2.3.1)

v2.3.1(Jan 4, 2021)

v2.2.4(Jan 7, 2020)

v2.2.3(Jan 6, 2020)

v2.2.2(Jan 4, 2020)

v2.2.0(Jun 20, 2018)

v2.1.0(Feb 13, 2018)

Owner

Hiromu OCHIAI

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Indonesian ID Card OCR using tesseract OCR

make a better chinese character recognition OCR than tesseract

Ackermann Line Follower Robot Simulation.

Distilling Knowledge via Knowledge Review, CVPR 2021

Provides OCR (Optical Character Recognition) services through web applications

Image augmentation for machine learning experiments.

A python scripts that uses 3 different feature extraction methods such as SIFT, SURF and ORB to find a book in a video clip and project trailer of a movie based on that book, on to it.

A webcam-based 3x3x3 rubik's cube solver written in Python 3 and OpenCV.

2 telegram-bots: for image recognition and for text generation

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