Tesseract debug output printed to console
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Matt Hill
Aug 2, 2015, 2:05:29 PM8/2/15
to tesseract-ocr
Using Tesseract as a library, I get a ton of this information printed to the console:
Total count=0
Min=0.00 Really=0
Lower quartile=0.00
Median=0.00, ile(0.5)=0.00
Upper quartile=0.00
Max=0.00 Really=0
Range=1
Mean= 0.00
SD= 0.00
Bottom=0, top=38, base=0, x=0
Is there any option or way to disable this?
zdenko podobny
Aug 2, 2015, 2:45:11 PM8/2/15
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This is not standard behavior. How you use library?
Please provide simple example case.
Zdenko
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ppsupport1
Nov 28, 2017, 1:45:47 AM11/28/17
to tesseract-ocr
We use default build :
./configure
make DESTDIR=/tmp/tesseract304/ install
Then we 'strip --strip-debug *' on the bin + lib folders. install into /usr/local/lib using mksquashfs
We do not see these errors when we run under the same code built on windows.
In both cases everything works as expected, only on linux do we see these errors.
It's not clear exactly where in the code these are emanating from.
Example output:
Total count=0
Min=0.00 Really=0
Lower quartile=0.00
Median=0.00, ile(0.5)=0.00
Upper quartile=0.00
Max=0.00 Really=0
Range=1
Mean= 0.00
SD= 0.00
Bottom=0, top=533, base=0, x=0
Total count=0
Min=0.00 Really=0
Lower quartile=0.00
Median=0.00, ile(0.5)=0.00
Upper quartile=0.00
Max=0.00 Really=0
Range=1
Mean= 0.00
SD= 0.00
Bottom=0, top=533, base=0, x=0
Library info:
ldd /usr/local/lib/libtesseract.so
linux-gate.so.1 (0xb77c3000)
liblept.so.4 => /usr/local/lib/liblept.so.4 (0xb7160000)
libpng16.so.16 => /usr/local/lib/libpng16.so.16 (0xb713a000)
libjpeg.so.62 => /usr/local/lib/libjpeg-turbo/libjpeg.so.62 (0xb70c2000)
libtiff.so.5 => /usr/local/lib/libtiff.so.5 (0xb7058000)
liblzma.so.5 => /usr/local/lib/liblzma.so.5 (0xb703a000)
libz.so.1 => /usr/lib/libz.so.1 (0xb7028000)
libpthread.so.0 => /lib/libpthread.so.0 (0xb7000000)
libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0xb6edd000)
libm.so.6 => /lib/libm.so.6 (0xb6e9d000)
libc.so.6 => /lib/libc.so.6 (0xb6d88000)
libgcc_s.so.1 => /usr/lib/libgcc_s.so.1 (0xb6d71000)
/lib/ld-linux.so.2 (0x80026000)
ldd /usr/local/lib/liblept172.so
linux-gate.so.1 (0xb771f000)
libm.so.6 => /lib/libm.so.6 (0xb74d5000)
libz.so.1 => /usr/lib/libz.so.1 (0xb74c3000)
libpng16.so.16 => /usr/local/lib/libpng16.so.16 (0xb749d000)
libjpeg.so.62 => /usr/local/lib/libjpeg-turbo/libjpeg.so.62 (0xb7425000)
libtiff.so.5 => /usr/local/lib/libtiff.so.5 (0xb73bb000)
libc.so.6 => /lib/libc.so.6 (0xb72a8000)
/lib/ld-linux.so.2 (0x8002a000)
libgcc_s.so.1 => /usr/lib/libgcc_s.so.1 (0xb7291000)
liblzma.so.5 => /usr/local/lib/liblzma.so.5 (0xb7273000)
libpthread.so.0 => /lib/libpthread.so.0 (0xb725c000)
# via git branch 3.04
/tesseract-ocr/tesseract$ git describe
3.04.01-63-g5afface
leptonica used source: leptonica-1.72.tar.gz
It seems other people are now also experiencing this issue, but I don't see much in way of resolving it anywhere... here are some build logs from another party with issue:
We're using tesseract through emgu, here is example code:
public class Program
{
public static void Main(string[] args)
{
const string TESSCHAR_ALPHA = @"ABCDEFGHIJKLMNOPQRSTUVWXYZ";
using (var tmpimg = imgh.MakeBlank<Bgr,Byte>(150,50, Color.White).DrawText("HELLOWORLD! 0123456789",Color.Black,8,5,15).DrawText(t2,Color.Black,8,5,30).ToBitMap())
{
double tp;
var txtvals = GetImageText<Gray>(d, "c:\tessdata", tmpimg, out tp, string.Empty, Tesseract.PageSegMode.SingleChar, true, 300, 0, TESSCHAR_ALPHA);
if (txtvals.Length==0) throw new Exception("unable to get text");
else
{
foreach (var v in txtvals) Console.WriteLine(v);
}
}
public static string GetImageText<T>(DebugDelegate d, string tessdata, Emgu.CV.Image<T, Byte> img, out double p, string regexfilter = "", PageSegMode textmode = PageSegMode.SingleBlock, bool isremovespecialchars = false, int TargetImgWidth = 300, int TargetImgH = 0, string txtdomain_chars = "", string tesslang = TESSLANG_DEFAULT, bool isthrowmissingdata = true) where T : struct, Emgu.CV.IColor
{
//setd(d);
p = 0;
if (isthrowmissingdata && string.IsNullOrWhiteSpace(tessdata))
throw new Exception("No TESSDATA folder was defined in call, GetImageText failed.");
System.Text.StringBuilder text = new System.Text.StringBuilder();
using (var tessimg = GetTesserImage(img,TargetImgWidth,TargetImgH))
using (var eng = new TesseractEngine(tessdata, tesslang, EngineMode.Default))
{
if (!string.IsNullOrWhiteSpace(txtdomain_chars))
{
eng.SetVariable(TESSENGVAR_CHARWHITELIST, txtdomain_chars);
//v("whitelist: " + eng.GetVar<string>(TESSENGVAR_CHARWHITELIST));
}
using (var bmp = tessimg.ToBitmap())
using (var block = eng.Process(bmp, textmode))
{
var raw = block.GetText();
var finaltext = GetFilteredText(raw, regexfilter, isremovespecialchars);
text.Append(finaltext);
p = block.GetMeanConfidence();
}
}
return text.ToString();
}
public static string GetFilteredText(string text, bool isremovespecial = true, string regexp = "", bool isshrinkspaces = true)
{
string rem;
var txt = isremovespecial ? RemoveSpecialCharacters(text, out rem) : text;
if (isshrinkspaces)
txt = GetTextShrink(txt);
if (!string.IsNullOrWhiteSpace(regexp))
txt = Util.rxm(txt, regexp); <-- this is just a one-liner into System.Text.RegularExpressions.RegularExpression.Match
return txt;
}
public static string GetTextShrink(string text, string compress2oneval = " ")
{
var ctxt = Util.rxr(text, "([" + compress2oneval + "]){2,}", "$1", false); <-- one-liner into RegularExpression.Replace
return ctxt;
}
public static Emgu.CV.Image<TColor, Byte> GetTesserImage<TColor>(Emgu.CV.Image<TColor, Byte> src,
int targetwidth = 300, int targetheight = 0, bool ispreproc = false) where TColor : struct, Emgu.CV.IColor
{
var isw = targetwidth > 0;
var ish = targetheight > 0;
Emgu.CV.Image<TColor, Byte> tgtimg = null;
// test for disable
if (isw || ish)
{
if (!isw)
targetwidth = src.Width;
else if (!ish)
targetheight = src.Height;
}
var isresize = (src.Width < targetwidth) || (src.Height < targetheight);
if (!isresize) tgtimg = src.Not();
if (isresize)
{
var srcratio = (double)src.Width / src.Height;
var tgtratiow = (double)targetwidth / src.Width;
var tgtratioh = (double)targetheight / src.Height;
var isratw = tgtratiow > tgtratioh;
int tw = 0, th = 0;
if (isratw)
{
tw = (int)(src.Width * tgtratiow);
th = (int)(tw / srcratio);
}
else
{
th = (int)(src.Height * tgtratioh);
tw = (int)(th / srcratio);
}
tgtimg = src.Not().Resize(tw, th, Emgu.CV.CvEnum.Inter.Cubic);
}
if (ispreproc)
{
using (Emgu.CV.Image<Emgu.CV.Structure.Gray, Byte> graytgt = imgh.Convert<TColor, Emgu.CV.Structure.Gray>(tgtimg))
{
Emgu.CV.CvInvoke.AdaptiveThreshold(graytgt, graytgt, 255, Emgu.CV.CvEnum.AdaptiveThresholdType.GaussianC, Emgu.CV.CvEnum.ThresholdType.Binary, 15, 20);
Emgu.CV.CvInvoke.EqualizeHist(graytgt, graytgt);
tgtimg = imgh.Convert<Emgu.CV.Structure.Gray, TColor>(graytgt);
}
}
return tgtimg;
}
on Emgu side, Tesseract.TesseractEngine.cs has this informational (auto-generated) header:
#region Assembly Tesseract-4Tgt.dll, v4.0.30319
// C:\Users\ppsupport1\Documents\Visual Studio 2010\Projects\bp\Libraries\bs\dlls\Tesseract-4Tgt.dll
#endregion
It was run with no special parameters:
mono test.exe
$ mono --version
Mono JIT compiler version 4.4.2 (Stable 4.4.2.11/f72fe45 Sun Sep 18 09:57:57 UTC 2016)
Copyright (C) 2002-2014 Novell, Inc, Xamarin Inc and Contributors. www.mono-project.com
TLS: __thread
SIGSEGV: altstack
Notifications: epoll
Architecture: x86
Disabled: none
Misc: softdebug
LLVM: supported, not enabled.
GC: sgen
$ ldd `which mono`
linux-gate.so.1 (0xb7734000)
libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0xb760d000)
libm.so.6 => /lib/libm.so.6 (0xb75bc000)
librt.so.1 => /lib/librt.so.1 (0xb75b4000)
libdl.so.2 => /lib/libdl.so.2 (0xb75b0000)
libpthread.so.0 => /lib/libpthread.so.0 (0xb7599000)
libc.so.6 => /lib/libc.so.6 (0xb7486000)
/lib/ld-linux.so.2 (0x800b4000)
libgcc_s.so.1 => /usr/lib/libgcc_s.so.1 (0xb746f000)
Realize there is probably a simpler reproduce but since this seems to be information-only and no debugging was enabled and others were seeing this, figured I'd share some of our data.
We also have many windows10 builds of same software that do no experience these messages.
Zdenko Podobný
Nov 28, 2017, 1:47:53 AM11/28/17
to tesser...@googlegroups.com
3.04 version is too old. nobody will check it/improve it. Please use current tesseract version.
Zdenko
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Joshua Franta
Nov 28, 2017, 2:03:23 AM11/28/17
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this information appears to be originating from here:
| /*********************************************************************** STATS::print_summary * * Print a summary of the stats. **********************************************************************/void STATS::print_summary() const { if (buckets_ == NULL) { return; } inT32 min = min_bucket(); inT32 max = max_bucket(); tprintf("Total count=%d\n", total_count_); tprintf("Min=%.2f Really=%d\n", ile(0.0), min); tprintf("Lower quartile=%.2f\n", ile(0.25)); tprintf("Median=%.2f, ile(0.5)=%.2f\n", median(), ile(0.5)); tprintf("Upper quartile=%.2f\n", ile(0.75)); tprintf("Max=%.2f Really=%d\n", ile(1.0), max); tprintf("Range=%d\n", max + 1 - min); tprintf("Mean= %.2f\n", mean()); tprintf("SD= %.2f\n", sd()); } is called in the same file here: void STATS::print() const { //...} generic 'print' name, frequency of invocations of this and unfamiliar w/tesseract organization make it tough to see where the call can be disabled atm. Any suggestions/pointers are much appreciated. | |
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Joshua Franta
Nov 28, 2017, 2:45:04 AM11/28/17
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good advice but we'd like to see existing build perform port to linux well before we flip.
this may not be an impediment, just noting since everyone who reported this before had no resolution. 3.04 was fairly popular, good work there. :)
the developers posted a fix to this on github a second ago, cross posting to bump up answer:
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