内容目录
原文链接：http://www.juzicode.com/image-ocr-tesseract-ocr5-command
帮助命令 –help或-h
直接输入tesseract或tesseract –help或tesseract -h会带出帮助信息：
E:\juzicode>tesseract
Usage:
tesseract --help | --help-extra | --version
tesseract --list-langs
tesseract imagename outputbase [options...] [configfile...]
OCR options:
-l LANG[+LANG] Specify language(s) used for OCR.
NOTE: These options must occur before any configfile.
Single options:
--help Show this help message.
--help-extra Show extra help for advanced users.
--version Show version information.
--list-langs List available languages for tesseract engine.完整帮助信息 –help-extra
E:\juzicode>tesseract --help-extra
Usage:
tesseract --help | --help-extra | --help-psm | --help-oem | --version
tesseract --list-langs [--tessdata-dir PATH]
tesseract --print-fonts-table [options...] [configfile...]
tesseract --print-parameters [options...] [configfile...]
tesseract imagename|imagelist|stdin outputbase|stdout [options...] [configfile...]
OCR options:
--tessdata-dir PATH Specify the location of tessdata path.
--user-words PATH Specify the location of user words file.
--user-patterns PATH Specify the location of user patterns file.
--dpi VALUE Specify DPI for input image.
--loglevel LEVEL Specify logging level. LEVEL can be
ALL, TRACE, DEBUG, INFO, WARN, ERROR, FATAL or OFF.
-l LANG[+LANG] Specify language(s) used for OCR.
-c VAR=VALUE Set value for config variables.
Multiple -c arguments are allowed.
--psm NUM Specify page segmentation mode.
--oem NUM Specify OCR Engine mode.
NOTE: These options must occur before any configfile.
Page segmentation modes:
0 Orientation and script detection (OSD) only.
1 Automatic page segmentation with OSD.
2 Automatic page segmentation, but no OSD, or OCR. (not implemented)
3 Fully automatic page segmentation, but no OSD. (Default)
4 Assume a single column of text of variable sizes.
5 Assume a single uniform block of vertically aligned text.
6 Assume a single uniform block of text.
7 Treat the image as a single text line.
8 Treat the image as a single word.
9 Treat the image as a single word in a circle.
10 Treat the image as a single character.
11 Sparse text. Find as much text as possible in no particular order.
12 Sparse text with OSD.
13 Raw line. Treat the image as a single text line,
bypassing hacks that are Tesseract-specific.
OCR Engine modes:
0 Legacy engine only.
1 Neural nets LSTM engine only.
2 Legacy + LSTM engines.
3 Default, based on what is available.
Single options:
-h, --help Show minimal help message.
--help-extra Show extra help for advanced users.
--help-psm Show page segmentation modes.
--help-oem Show OCR Engine modes.
-v, --version Show version information.
--list-langs List available languages for tesseract engine.
--print-fonts-table Print tesseract fonts table.
--print-parameters Print tesseract parameters.查看版本 –version或-v
tesseract –version或tesseract -v
E:\juzicode>tesseract --version
tesseract v5.0.0-rc1.20211030
leptonica-1.78.0
libgif 5.1.4 : libjpeg 8d (libjpeg-turbo 1.5.3) : libpng 1.6.34 : libtiff 4.0.9 : zlib 1.2.11 : libwebp 0.6.1 : libopenjp2 2.3.0
Found AVX2
Found AVX
Found FMA
Found SSE4.1
Found libarchive 3.5.0 zlib/1.2.11 liblzma/5.2.3 bz2lib/1.0.6 liblz4/1.7.5 libzstd/1.4.5
Found libcurl/7.77.0-DEV Schannel zlib/1.2.11 zstd/1.4.5 libidn2/2.0.4 nghttp2/1.31.0查看安装语言包 –list-langs
E:\juzicode>tesseract --list-langs
List of available languages (6):
chi_sim
eng
mnist
osd识别命令
tesseract imagename|imagelist|stdin outputbase|stdout [options…] [configfile…]a、options参数：
OCR options:
--tessdata-dir PATH Specify the location of tessdata path.
--user-words PATH Specify the location of user words file.
--user-patterns PATH Specify the location of user patterns file.
--dpi VALUE Specify DPI for input image.
--loglevel LEVEL Specify logging level. LEVEL can be
ALL, TRACE, DEBUG, INFO, WARN, ERROR, FATAL or OFF.
-l LANG[+LANG] Specify language(s) used for OCR.
-c VAR=VALUE Set value for config variables.
Multiple -c arguments are allowed.
--psm NUM Specify page segmentation mode.
--oem NUM Specify OCR Engine mode.
NOTE: These options must occur before any configfile.b、查看psm分段类型
E:\juzicode\image\tess>tesseract --help-psm
Page segmentation modes:
0 Orientation and script detection (OSD) only.
1 Automatic page segmentation with OSD.
2 Automatic page segmentation, but no OSD, or OCR. (not implemented)
3 Fully automatic page segmentation, but no OSD. (Default)
4 Assume a single column of text of variable sizes.
5 Assume a single uniform block of vertically aligned text.
6 Assume a single uniform block of text.
7 Treat the image as a single text line.
8 Treat the image as a single word.
9 Treat the image as a single word in a circle.
10 Treat the image as a single character.
11 Sparse text. Find as much text as possible in no particular order.
12 Sparse text with OSD.
13 Raw line. Treat the image as a single text line,
bypassing hacks that are Tesseract-specific.c、查看ocr引擎类型
E:\juzicode>tesseract --help-oem
OCR Engine modes:
0 Legacy engine only.
1 Neural nets LSTM engine only.
2 Legacy + LSTM engines.
3 Default, based on what is available.查看某种语言支持的字体 –print-fonts-table -l xxx
E:\juzicode>tesseract --print-fonts-table -l chi_sim
Tesseract fonts table:
ID= 1: Aachen_Std_Bold is_italic=false is_bold=true is_fixed_pitch=false is_serif=false is_fraktur=false
ID= 2: Aachen_Std_Medium is_italic=false is_bold=false is_fixed_pitch=false is_serif=false is_fraktur=false
ID= 3: aakar_Medium is_italic=false is_bold=false is_fixed_pitch=false is_serif=false is_fraktur=false
ID= 4: Abadi_MT_Std_Bold is_italic=false is_bold=true is_fixed_pitch=false is_serif=true is_fraktur=false
ID= 5: Abadi_MT_Std_Bold_Italic is_italic=true is_bold=true is_fixed_pitch=false is_serif=true is_fraktur=false
ID= 6: Abadi_MT_Std_Condensed is_italic=false is_bold=false is_fixed_pitch=false is_serif=true is_fraktur=false
ID= 7: Abadi_MT_Std_Light is_italic=false is_bold=false is_fixed_pitch=false is_serif=true is_fraktur=false
ID= 8: Abadi_MT_Std_Light_Condensed is_italic=false is_bold=false is_fixed_pitch=false is_serif=true is_fraktur=false
ID= 9: Abadi_MT_Std_Light_Italic is_italic=true is_bold=false is_fixed_pitch=false is_serif=true is_fraktur=false
ID= 10: Abadi_MT_Std_Medium_Italic is_italic=true is_bold=false is_fixed_pitch=false is_serif=true is_fraktur=false
ID= 11: Abadi_MT_Std_Ultra-Bold is_italic=false is_bold=true is_fixed_pitch=false is_serif=true is_fraktur=false
ID= 12: Abadi_MT_Std_Ultra-Bold_Italic is_italic=true is_bold=true is_fixed_pitch=false is_serif=true is_fraktur=false
ID= 13: Abaton_ITC_Std_Light is_italic=false is_bold=false is_fixed_pitch=false is_serif=false is_fraktur=false
ID= 14: Aboriginal_Sans is_italic=false is_bold=false is_fixed_pitch=false is_serif=false is_fraktur=false
ID= 15: Aboriginal_Sans_Bold is_italic=false is_bold=true is_fixed_pitch=false is_serif=false is_fraktur=false
。。。。。查看参数–print-parameters
E:\juzicode>tesseract --print-parameters
Tesseract parameters:
log_level 2147483647 Logging level
textord_dotmatrix_gap 3 Max pixel gap for broken pixed pitch
textord_debug_block 0 Block to do debug on
textord_pitch_range 2 Max range test on pitch
textord_words_veto_power 5 Rows required to outvote a veto
textord_tabfind_show_strokewidths 0 Show stroke widths (ScrollView)
pitsync_linear_version 6 Use new fast algorithm
oldbl_holed_losscount 10 Max lost before fallback line used
textord_skewsmooth_offset 4 For smooth factor
textord_skewsmooth_offset2 1 For smooth factor
textord_test_x -2147483647 coord of test pt
textord_test_y -2147483647 coord of test pt
textord_min_blobs_in_row 4 Min blobs before gradient counted
textord_spline_minblobs 8 Min blobs in each spline segment
textord_spline_medianwin 6 Size of window for spline segmentation
textord_max_blob_overlaps 4 Max number of blobs a big blob can overlap
textord_min_xheight 10 Min credible pixel xheight
textord_lms_line_trials 12 Number of linew fits to do
。。。。