From 475b743e158d3cd311bcc6144876a84344a2de7b Mon Sep 17 00:00:00 2001
From: Vincent Vanwaelscappel <vincent@cubedesigners.com>
Date: Thu, 28 Nov 2019 12:35:26 +0100
Subject: [PATCH] wip #3206 @1

---
 _doc/areas.psd | Bin 1118754 -> 1119192 bytes
 js/ocr.js      |   9 +++++++++
 2 files changed, 9 insertions(+)

diff --git a/_doc/areas.psd b/_doc/areas.psd
index 80a0632e43b73c98c1d3c4b85ccd92278f702a4e..3abb9e0a4473290476595c50390d529e3f02c80c 100644
GIT binary patch
delta 357
zcmZ3q#O20vmkA0?;Y<^i)R?ShZ1nod#BOM1VrFGxG1-mT9?tGz-mH>poRXMoVPT+~
zW^7@ho1A81p_^!6ZlY_PWRYfIU~FifXkofJnZ<{7G7r1!WLpkLqI66)VzYx;v-vrP
zi@|0c%WhV|W(EcZMg|5Z2MA^mpM1hD&xL`(_Adj2g_EZ*iyTk^0|N_)0Q03lEM|Kk
z!3JVM0Mk*Rb|7Y8Wk_TwVn_v&#go_Di*KH2?;#4e^+Cu7M%LtW%IRw+`$x!a{u~w#
z=4MQ7_K#@yk6;91CLm@8Viq7~1!6WJW(Q&pAm#*OE+FOxVjdvo1!6uR=HKogA#iyo
E0Gl#g5&!@I

delta 267
zcmcby+-1=cmkA1dp*|K)p1v%q3?Lvd{liuc5e^m=5Xa)-Mz60->;_iGmR3ealiir@
z;p`sf&6Ddm)HbKGc(HCy<F3(XWZ3-3s+(1?4yccjfq}^Zf*Hgn*E!_LfNhWiN-;37
zfCw;O3dCY|oy_MbF37=<!jR8U&XC8D1EdofQZ^en#*4zN+dM7o10!qvt(7}2Z0?RI
z1v7UtPwtM8YgUeGSB_!?VkRJF24WT<W(8t4AZ7<*4j|?PVlE)&24Wr{<^^ItAm-n$
J93`-ICjgc$MIHbE

diff --git a/js/ocr.js b/js/ocr.js
index 9b0be4e..91edaa7 100644
--- a/js/ocr.js
+++ b/js/ocr.js
@@ -70,6 +70,15 @@ function extractRegion(src, region, color, area) {
     M.data64F[5] += (bbox.height - h) / 2;
     cv.warpAffine(dst, res, M, bbox, cv.INTER_LINEAR, cv.BORDER_CONSTANT, new cv.Scalar());
 
+    // Invert colors
+    cv.bitwise_not(res, res);
+    // Grayscale
+    cv.cvtColor(res, res, cv.COLOR_RGBA2GRAY, 0);
+    // Brightness
+    cv.convertScaleAbs(res, res,2,100);
+    // Contrast
+     cv.equalizeHist(res, res);
+
     let canvas = getCanvas(drawId);
     cv.imshow(canvas, res);
 
-- 
2.39.5