Free OCR package in Python and selecting appropriate widget for the GUI

Mohsen Owzar mohsen.owzar at gmail.com
Thu Sep 23 02:53:04 EDT 2021 

DFS schrieb am Mittwoch, 22. September 2021 um 09:41:42 UTC+2:
> On 9/22/2021 1:54 AM, Mohsen Owzar wrote: 
> > DFS schrieb am Mittwoch, 22. September 2021 um 05:10:30 UTC+2: 
> >> On 9/21/2021 10:38 PM, Mohsen Owzar wrote: 
> >>> DFS schrieb am Dienstag, 21. September 2021 um 15:45:38 UTC+2: 
> >>>> On 9/21/2021 4:36 AM, Mohsen Owzar wrote: 
> >>>>> Hi Guys 
> >>>>> Long time ago I've written a program in Malab a GUI for solving Sudoku puzzles, which worked not so bad. 
> >>>>> Now I try to write this GUI with Python with PyQt5 or TKinter. 
> >>>>> First question is: 
> >>>>> Is there any free OCR software, packages or code in Python, which I can use to recognize the given digits and their positions in the puzzle square. 
> >>>>> Second: 
> >>>>> Because, I can not attach a picture to this post, I try to describe my picture of my GUI. 
> >>>> Draw your GUI in PyQt designer or other graphics tool, then upload a 
> >>>> screenshot of it to imgur, then post the link to the picture. 
> >>> Thanks, for your answer. 
> >>> But, what is "imgur"? 
> >>> I'm not so familiar with handling of pictures in this group. 
> >>> How can I call "imgur" or how can I get there? 
> >>> 
> >>> Regards 
> >>> Mohsen 
> >> www.imgur.com 
> >> 
> >> It's a website you can upload image files or screenshots to. Then you 
> >> can copy a link to your picture and post the link here. 
> > I have already posted the link, but I can not see it anywhere. 
> > Now, I post it again: 
> > https://imgur.com/a/Vh8P2TE 
> > I hope that you can see my two images. 
> > Regards 
> > Mohsen
> Got it. 
> 
> I haven't used tkinter. In PyQt5 designer I think you should use one 
> QTextEdit control for each square. 
> 
> 
> Each square with the small black font can be initially populated with 
> 
> 1 2 3 
> 4 5 6 
> 7 8 9 
> 
> 
> 
> https://imgur.com/lTcEiML 
> 
> 
> 
> some starter python code (maybe save as sudoku.py) 
> 
> ===================================================================== 
> from PyQt5 import Qt, QtCore, QtGui, QtWidgets, uic 
> from PyQt5.Qt import * 
> from PyQt5.QtCore import * 
> from PyQt5.QtGui import * 
> from PyQt5.QtWidgets import * 
> 
> #objects 
> app = QtWidgets.QApplication([]) 
> frm = uic.loadUi("sudoku.ui") 
> 
> 
> #grid = a collection of squares 
> grids = 1 
> 
> #squares = number of squares per grid 
> squares = 9 
> 
> #fill the squares with 1-9 
> def populateSquares(): 
> for i in range(grids,grids+1): 
> for j in range(1,squares+1): 
> widget = frm.findChild(QtWidgets.QTextEdit, "txt{}_{}".format(i,j)) 
> widget.setText("1 2 3 4 5 6 7 8 9") 
> 
> #read data from squares 
> def readSquares(): 
> for i in range(grids,grids+1): 
> for j in range(1,squares+1): 
> print("txt%d_%d contains: %s" % 
> (i,j,frm.findChild(QtWidgets.QTextEdit, 
> "txt{}_{}".format(i,j)).toPlainText())) 
> 
> 
> #connect pushbuttons to code 
> frm.btnPopulate.clicked.connect(populateSquares) 
> frm.btnReadContents.clicked.connect(readSquares) 
> 
> #show main form 
> frm.show() 
> 
> #initiate application 
> app.exec() 
> ===================================================================== 
> 
> 
> 
> 
> 
> .ui file (ie save as sudoku.ui) 
> ===================================================================== 
> 
> <?xml version="1.0" encoding="UTF-8"?> 
> <ui version="4.0"> 
> <class>MainWindow</class> 
> <widget class="QMainWindow" name="MainWindow"> 
> <property name="geometry"> 
> <rect> 
> <x>0</x> 
> <y>0</y> 
> <width>325</width> 
> <height>288</height> 
> </rect> 
> </property> 
> <property name="windowTitle"> 
> <string>Sudoku</string> 
> </property> 
> <widget class="QWidget" name="centralwidget"> 
> <widget class="QTextEdit" name="txt1_1"> 
> <property name="geometry"> 
> <rect> 
> <x>32</x> 
> <y>22</y> 
> <width>83</width> 
> <height>65</height> 
> </rect> 
> </property> 
> <property name="font"> 
> <font> 
> <family>Courier</family> 
> <pointsize>12</pointsize> 
> <weight>50</weight> 
> <bold>false</bold> 
> </font> 
> </property> 
> <property name="acceptDrops"> 
> <bool>false</bool> 
> </property> 
> <property name="styleSheet"> 
> <string notr="true">color: rgb(0, 0, 127); 
> background-color: rgb(255, 255, 127);</string> 
> </property> 
> <property name="frameShape"> 
> <enum>QFrame::StyledPanel</enum> 
> </property> 
> <property name="frameShadow"> 
> <enum>QFrame::Sunken</enum> 
> </property> 
> <property name="horizontalScrollBarPolicy"> 
> <enum>Qt::ScrollBarAlwaysOff</enum> 
> </property> 
> <property name="acceptRichText"> 
> <bool>true</bool> 
> </property> 
> </widget> 
> <widget class="QTextEdit" name="txt1_2"> 
> <property name="geometry"> 
> <rect> 
> <x>114</x> 
> <y>22</y> 
> <width>83</width> 
> <height>65</height> 
> </rect> 
> </property> 
> <property name="font"> 
> <font> 
> <family>Courier</family> 
> <pointsize>12</pointsize> 
> <weight>50</weight> 
> <bold>false</bold> 
> </font> 
> </property> 
> <property name="acceptDrops"> 
> <bool>false</bool> 
> </property> 
> <property name="styleSheet"> 
> <string notr="true">color: rgb(0, 0, 127); 
> background-color: rgb(255, 255, 127);</string> 
> </property> 
> <property name="frameShape"> 
> <enum>QFrame::StyledPanel</enum> 
> </property> 
> <property name="frameShadow"> 
> <enum>QFrame::Sunken</enum> 
> </property> 
> <property name="horizontalScrollBarPolicy"> 
> <enum>Qt::ScrollBarAlwaysOff</enum> 
> </property> 
> <property name="acceptRichText"> 
> <bool>true</bool> 
> </property> 
> </widget> 
> <widget class="QTextEdit" name="txt1_3"> 
> <property name="geometry"> 
> <rect> 
> <x>196</x> 
> <y>22</y> 
> <width>83</width> 
> <height>65</height> 
> </rect> 
> </property> 
> <property name="font"> 
> <font> 
> <family>Courier</family> 
> <pointsize>12</pointsize> 
> <weight>50</weight> 
> <bold>false</bold> 
> </font> 
> </property> 
> <property name="acceptDrops"> 
> <bool>false</bool> 
> </property> 
> <property name="styleSheet"> 
> <string notr="true">color: rgb(0, 0, 127); 
> background-color: rgb(255, 255, 127);</string> 
> </property> 
> <property name="frameShape"> 
> <enum>QFrame::StyledPanel</enum> 
> </property> 
> <property name="frameShadow"> 
> <enum>QFrame::Sunken</enum> 
> </property> 
> <property name="horizontalScrollBarPolicy"> 
> <enum>Qt::ScrollBarAlwaysOff</enum> 
> </property> 
> <property name="acceptRichText"> 
> <bool>true</bool> 
> </property> 
> </widget> 
> <widget class="QTextEdit" name="txt1_4"> 
> <property name="geometry"> 
> <rect> 
> <x>32</x> 
> <y>86</y> 
> <width>83</width> 
> <height>65</height> 
> </rect> 
> </property> 
> <property name="font"> 
> <font> 
> <family>Courier</family> 
> <pointsize>12</pointsize> 
> <weight>50</weight> 
> <bold>false</bold> 
> </font> 
> </property> 
> <property name="acceptDrops"> 
> <bool>false</bool> 
> </property> 
> <property name="styleSheet"> 
> <string notr="true">color: rgb(0, 0, 127); 
> background-color: rgb(255, 255, 127);</string> 
> </property> 
> <property name="frameShape"> 
> <enum>QFrame::StyledPanel</enum> 
> </property> 
> <property name="frameShadow"> 
> <enum>QFrame::Sunken</enum> 
> </property> 
> <property name="horizontalScrollBarPolicy"> 
> <enum>Qt::ScrollBarAlwaysOff</enum> 
> </property> 
> <property name="acceptRichText"> 
> <bool>true</bool> 
> </property> 
> </widget> 
> <widget class="QTextEdit" name="txt1_5"> 
> <property name="geometry"> 
> <rect> 
> <x>114</x> 
> <y>86</y> 
> <width>83</width> 
> <height>65</height> 
> </rect> 
> </property> 
> <property name="font"> 
> <font> 
> <family>Courier</family> 
> <pointsize>12</pointsize> 
> <weight>50</weight> 
> <bold>false</bold> 
> </font> 
> </property> 
> <property name="acceptDrops"> 
> <bool>false</bool> 
> </property> 
> <property name="styleSheet"> 
> <string notr="true">color: rgb(0, 0, 127); 
> background-color: rgb(255, 255, 127);</string> 
> </property> 
> <property name="frameShape"> 
> <enum>QFrame::StyledPanel</enum> 
> </property> 
> <property name="frameShadow"> 
> <enum>QFrame::Sunken</enum> 
> </property> 
> <property name="horizontalScrollBarPolicy"> 
> <enum>Qt::ScrollBarAlwaysOff</enum> 
> </property> 
> <property name="acceptRichText"> 
> <bool>true</bool> 
> </property> 
> </widget> 
> <widget class="QTextEdit" name="txt1_6"> 
> <property name="geometry"> 
> <rect> 
> <x>196</x> 
> <y>86</y> 
> <width>83</width> 
> <height>65</height> 
> </rect> 
> </property> 
> <property name="font"> 
> <font> 
> <family>Courier</family> 
> <pointsize>12</pointsize> 
> <weight>50</weight> 
> <bold>false</bold> 
> </font> 
> </property> 
> <property name="acceptDrops"> 
> <bool>false</bool> 
> </property> 
> <property name="styleSheet"> 
> <string notr="true">color: rgb(0, 0, 127); 
> background-color: rgb(255, 255, 127);</string> 
> </property> 
> <property name="frameShape"> 
> <enum>QFrame::StyledPanel</enum> 
> </property> 
> <property name="frameShadow"> 
> <enum>QFrame::Sunken</enum> 
> </property> 
> <property name="horizontalScrollBarPolicy"> 
> <enum>Qt::ScrollBarAlwaysOff</enum> 
> </property> 
> <property name="acceptRichText"> 
> <bool>true</bool> 
> </property> 
> </widget> 
> <widget class="QTextEdit" name="txt1_7"> 
> <property name="geometry"> 
> <rect> 
> <x>32</x> 
> <y>150</y> 
> <width>83</width> 
> <height>65</height> 
> </rect> 
> </property> 
> <property name="font"> 
> <font> 
> <family>Courier</family> 
> <pointsize>12</pointsize> 
> <weight>50</weight> 
> <bold>false</bold> 
> </font> 
> </property> 
> <property name="acceptDrops"> 
> <bool>false</bool> 
> </property> 
> <property name="styleSheet"> 
> <string notr="true">color: rgb(0, 0, 127); 
> background-color: rgb(255, 255, 127);</string> 
> </property> 
> <property name="frameShape"> 
> <enum>QFrame::StyledPanel</enum> 
> </property> 
> <property name="frameShadow"> 
> <enum>QFrame::Sunken</enum> 
> </property> 
> <property name="horizontalScrollBarPolicy"> 
> <enum>Qt::ScrollBarAlwaysOff</enum> 
> </property> 
> <property name="acceptRichText"> 
> <bool>true</bool> 
> </property> 
> </widget> 
> <widget class="QTextEdit" name="txt1_8"> 
> <property name="geometry"> 
> <rect> 
> <x>114</x> 
> <y>150</y> 
> <width>83</width> 
> <height>65</height> 
> </rect> 
> </property> 
> <property name="font"> 
> <font> 
> <family>Courier</family> 
> <pointsize>12</pointsize> 
> <weight>50</weight> 
> <bold>false</bold> 
> </font> 
> </property> 
> <property name="acceptDrops"> 
> <bool>false</bool> 
> </property> 
> <property name="styleSheet"> 
> <string notr="true">color: rgb(0, 0, 127); 
> background-color: rgb(255, 255, 127);</string> 
> </property> 
> <property name="frameShape"> 
> <enum>QFrame::StyledPanel</enum> 
> </property> 
> <property name="frameShadow"> 
> <enum>QFrame::Sunken</enum> 
> </property> 
> <property name="horizontalScrollBarPolicy"> 
> <enum>Qt::ScrollBarAlwaysOff</enum> 
> </property> 
> <property name="acceptRichText"> 
> <bool>true</bool> 
> </property> 
> </widget> 
> <widget class="QPushButton" name="btnPopulate"> 
> <property name="geometry"> 
> <rect> 
> <x>32</x> 
> <y>228</y> 
> <width>121</width> 
> <height>35</height> 
> </rect> 
> </property> 
> <property name="text"> 
> <string>Populate with numbers</string> 
> </property> 
> </widget> 
> <widget class="QTextEdit" name="txt1_9"> 
> <property name="geometry"> 
> <rect> 
> <x>196</x> 
> <y>150</y> 
> <width>83</width> 
> <height>65</height> 
> </rect> 
> </property> 
> <property name="font"> 
> <font> 
> <family>Courier</family> 
> <pointsize>12</pointsize> 
> <weight>50</weight> 
> <bold>false</bold> 
> </font> 
> </property> 
> <property name="acceptDrops"> 
> <bool>false</bool> 
> </property> 
> <property name="styleSheet"> 
> <string notr="true">color: rgb(0, 0, 127); 
> background-color: rgb(255, 255, 127);</string> 
> </property> 
> <property name="frameShape"> 
> <enum>QFrame::StyledPanel</enum> 
> </property> 
> <property name="frameShadow"> 
> <enum>QFrame::Sunken</enum> 
> </property> 
> <property name="horizontalScrollBarPolicy"> 
> <enum>Qt::ScrollBarAlwaysOff</enum> 
> </property> 
> <property name="acceptRichText"> 
> <bool>true</bool> 
> </property> 
> </widget> 
> <widget class="QPushButton" name="btnReadContents"> 
> <property name="geometry"> 
> <rect> 
> <x>170</x> 
> <y>228</y> 
> <width>109</width> 
> <height>35</height> 
> </rect> 
> </property> 
> <property name="text"> 
> <string>Read contents</string> 
> </property> 
> </widget> 
> </widget> 
> <widget class="QStatusBar" name="statusbar"/> 
> </widget> 
> <resources/> 
> <connections/> 
> </ui> 
> 
> =====================================================================
Thank you,

I'll try to use this QTextEdit, to see if I'm able to manage my needs.

Regards
Mohsen

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