improve accuracy for these documents?

[Caleb Pitman]

Hello,

I am trying to get better results out of the attached example documents.

Tesseract 3.03, leptonica 1.7, libgif 4.1.6(?) : libjpeg 8d : libpng 1.2.50 : libtiff 4.0.3 : zlib 1.2.8 : webp 0.4.0

Most scans not shown below have fared much better by disabling the following:

load_system_dawg F

load_freq_dawg F

load_punc_dawg F

load_number_dawg F

load_unambig_dawg F

load_bigram_dawg F

load_fixed_length_dawgs F

I'm only after the XY data and/or Lat/Long and any relevant text such as NAD27/NAD83/State Plane Zone. 

results per image:

a.tif (400 dpi)

dawg F: Coordinates NAD 27 TC ZONE X - 1289509 Y- 812593 LAT.: N 31.88025 LONé.: W EZLBZZZS

dawg T: Coordinates NAD 27 TC ZONE X 8 1289509 Y- 812593 LAT; N 31.88025 LONéJ W M62225

freds textcleaner: 

Coordinates NAD 27 TC ZONE X - 1289509 Y- 812593 LAT.: N 31.88025 LONG.: W 102.62225

textcleaner -g -e stretch -f 25 -o 20 -t 30 -u -s 1 -T -p 20  a.tif a2.tif 

c.tif (300 dpi)

dawg F: 

LAT!TUDE: N 3!'5!â22' LONG!TUDE: W 102'42â18" C.A.G.

STATE PLANE COORDINATES: ' DI;IA&;;{:âE'SIOSAEI.E%?:S&'O;%VEIESIN

NORTH: 10646661 EAST: l5602l0 .

dawg T: 

LATITUDE: N 3I'5Iâ22' LONGITUDE: W 102°42âI8' C.A.G.

STATE PLANE COORDINATES: ' DIaAï¬EEEOSAéEI§ES§O;%VEIESIN

NORTH: 1064666! EAST: I5602IO 

freds textcleaner:

LATITUDE: N 3!'5!'22â LONG!TUDE: W 102â42'!8" C.A.G.

STATE PLANE coommres: ' D{STANCE TO NEAREST rowu m Co.:

Tws WELL wcm(m SHOWM ON ms NORTH: f0646661 EAST: 1560210 51 MfLES SE OF NOTREES, TX

convert c.tif -flatten -colorspace gray -median 2 -resize 90% -threshold 18% c3.tif

LATITUDE: N 3!'5{'22' LONG!TUDE: W 102'42'18" C.A.G.

STATE PLANE COORDWATES: msnwcg TO NEAREST TOWN w CO.:

NORTH: 10646661 EAST: !5602!0 51 MILES SE OF NOTREES, TX

d.tif (300 dpi)

dawg F:

SURVEY WELL DATA ~ NAD 27. TX(C)

\ \\  X=1408281.18': Y= 748062.84'

\ 4015 40|4 \ 4}ï¬ T===§3==§§ La+.= 31â

dawg T:

\ \ SURVEY WELL DATA ~ NAD 27. TX(C)

\ \\  X=1408281.18': Y= 748062.84'

\ 4015 4014 \ 4}? T===§3==§§ LOT.= 31°42â34.52â

freds textcleaner:

;'    \ \ §SQJER\/E§§( WELL DATA-âNAD 27. TX(C)

\ \\ L@@K = 1408281.18â: Y= 748062.84â

\ 40|5 40|4 \ 41? jr==:§==§§ La+.= 31°42'34.52â

convert d.tif -flatten -colorspace gray -median 2 -resize 90% -threshold 18% d3.tif

:ggnggy/;g;\/ WELL DATA # NAD 27. TX(C)

.âJ %: x: W408281.18': Y: 748062.84â

,i:g H r;f>:3@* La+.: 3Tâ42â34.52":Long.: 102â14â10.19â

Any ideas how to improve accuracy ?