converting the coordinates of a 300 dpi image to coordinates of a 72 dpi image -

-

i'm working on tess4j project , using tess4j, i've gotten coordinates of words in image. problem is, these coordinates tiff image. project involves writing layer of text overr image in pdf document. take resolution of pdf document 72dpi. coordinates morphed , placed. if can bring down resolution 300 dpi 72dpi , pass image tessaract, wont coordinates need? if not, alternatives? tried multiplying coordinates 300/72. surprisingly, doesnt work.

thanks in advance!

to convert 300dpi 72dpi, need multiply 72/300, not other way round. in floating point or multiplication first , division then, in (x * 72) / 300. pdf units 1/72 of inch.

scaling down original image not idea, since loss of information reduce output text quality.


Comments

Post a Comment

Popular posts from this blog

android - getbluetoothservice() called with no bluetoothmanagercallback -

-
i getting getbluetoothservice() called no bluetoothmanagercallback error in android application. i have no idea causing or bluetooth manager callbacks. can give me idea of causing problem or start looking. by reading android source code, seems warning cannot about. source code shows if call bluetoothsocket#connect(); then call bluetoothadapter.getdefaultadapter().getbluetoothservice(null); the key here, null parameter passes in above line. due this, there no callback, , bluetoothsocket class throw out warning. since warning, not think need it. https://android.googlesource.com/platform/frameworks/base/+/master/core/java/android/bluetooth/bluetoothsocket.java line 306 https://android.googlesource.com/platform/frameworks/base/+/master/core/java/android/bluetooth/bluetoothadapter.java line 1610
Read more

sql - ASP.NET SqlDataSource, like on SelectCommand -

-
i'm working on asp.net. have sqldatasource query hardcoded on selectcommand: <asp:sqldatasource id="datasource1" runat="server" cancelselectonnullparameter="false" connectionstring="<%$ connectionstrings:s.properties.settings.connectionstring %>" selectcommand="select * [table] ([col1] case @col1_param when null col1 else @col1_param end) , ([col2] case @col2_param when null col2 else @col2_param end)" selectcommandtype="text"> <selectparameters> <asp:controlparameter controlid="textbox1" name="col1_param" propertyname="text" type="string" /> <asp:controlparameter controlid="textbox2" name="col2_param" propertyname="text" type="string" /> </selectparameters> what want if enter data on 1 textbox only, data display according textbox
Read more

ios - Undefined symbols for architecture armv7: "_OBJC_CLASS_$_SSZipArchive" -

-
i try using extractzipfile plugin @ this: https://github.com/phonegap/phonegap-plugins/tree/master/ios/extractzipfile but when compiler xcode 4.6.1 in sdk 6.1 throws error: undefined symbols architecture i386: "_objc_class_$_ssziparchive", referenced from: objc-class-ref in extractzipfileplugin.o ld: symbol(s) not found architecture i386 clang: error: linker command failed exit code 1 (use -v see invocation) i try issue @ here: undefined symbols architecture armv7 ssziparchive but shows error: /users/alienware/desktop/extractzipfile/ssziparchive/tests/ssziparchivetests.m:10:9: 'sentestingkit/sentestingkit.h' file not found i work phonegap , make app in ios, dump. update : try add ssziparchive.m compiler source , come new error: undefined symbols architecture i386: "_unzclose", referenced from: +[ssziparchive unzipfileatpath:todestination:overwrite:password:error:delegate:] in ssziparchive.o "_unzclosecurrentfil
Read more