Better results with 7seg.traineddata

[Shreeshrii]

Test of a small sample of real life images gives better results with the older 7seg.traineddata. Unfortunately I have deleted the source training_text for the same. Customizing the training text and fonts based on the requirements as well as preprocessing the images to reduce the gaps will lead to better recognition.

***** ssd202 LANG 7seg TESSDATA tessdata_ssd OEM 1 PSM 6 ****
Failed to load any lstm-specific dictionaries for lang 7seg!!
2.02

***** ssd202 LANG ssd TESSDATA tessdata_ssd OEM 1 PSM 6 ****
1
2.02

***** ssd1 LANG 7seg TESSDATA tessdata_ssd OEM 1 PSM 6 ****
Failed to load any lstm-specific dictionaries for lang 7seg!!
22.0

***** ssd1 LANG ssd TESSDATA tessdata_ssd OEM 1 PSM 6 ****
22.12

***** ssd2 LANG 7seg TESSDATA tessdata_ssd OEM 1 PSM 6 ****
Failed to load any lstm-specific dictionaries for lang 7seg!!
29:
L. I1.0

***** ssd2 LANG ssd TESSDATA tessdata_ssd OEM 1 PSM 6 ****
29
11.0

***** ssd3 LANG 7seg TESSDATA tessdata_ssd OEM 1 PSM 6 ****
Failed to load any lstm-specific dictionaries for lang 7seg!!
4:05:30

***** ssd3 LANG ssd TESSDATA tessdata_ssd OEM 1 PSM 6 ****
801

***** ssd4 LANG 7seg TESSDATA tessdata_ssd OEM 1 PSM 6 ****
Failed to load any lstm-specific dictionaries for lang 7seg!!
10.5°

***** ssd4 LANG ssd TESSDATA tessdata_ssd OEM 1 PSM 6 ****
10.5°

***** ssd5 LANG 7seg TESSDATA tessdata_ssd OEM 1 PSM 6 ****
Failed to load any lstm-specific dictionaries for lang 7seg!!
4:05:30

***** ssd5 LANG ssd TESSDATA tessdata_ssd OEM 1 PSM 6 ****
4:05:30

***** ssd6 LANG 7seg TESSDATA tessdata_ssd OEM 1 PSM 6 ****
Failed to load any lstm-specific dictionaries for lang 7seg!!
10.5°

***** ssd6 LANG ssd TESSDATA tessdata_ssd OEM 1 PSM 6 ****
10.5°

***** ssd7 LANG 7seg TESSDATA tessdata_ssd OEM 1 PSM 6 ****
Failed to load any lstm-specific dictionaries for lang 7seg!!
29:

***** ssd7 LANG ssd TESSDATA tessdata_ssd OEM 1 PSM 6 ****
11

***** ssd8 LANG 7seg TESSDATA tessdata_ssd OEM 1 PSM 6 ****
Failed to load any lstm-specific dictionaries for lang 7seg!!
05:54:09

***** ssd8 LANG ssd TESSDATA tessdata_ssd OEM 1 PSM 6 ****
05:54:09

***** ssd9 LANG 7seg TESSDATA tessdata_ssd OEM 1 PSM 6 ****
Failed to load any lstm-specific dictionaries for lang 7seg!!
7:45

***** ssd9 LANG ssd TESSDATA tessdata_ssd OEM 1 PSM 6 ****
7:45

[Shreeshrii]

***** ssdPicture1 LANG 7seg TESSDATA tessdata_ssd OEM 1 PSM 6 ****
Failed to load any lstm-specific dictionaries for lang 7seg!!
CO2

***** ssdPicture1 LANG ssd_alphanum_plus TESSDATA tessdata_ssd OEM 1 PSM 6 ****
C02

***** ssdPicture2 LANG 7seg TESSDATA tessdata_ssd OEM 1 PSM 6 ****
Failed to load any lstm-specific dictionaries for lang 7seg!!
E09

***** ssdPicture2 LANG ssd_alphanum_plus TESSDATA tessdata_ssd OEM 1 PSM 6 ****
83

***** ssdPicture3 LANG 7seg TESSDATA tessdata_ssd OEM 1 PSM 6 ****
Failed to load any lstm-specific dictionaries for lang 7seg!!
171171 171
D0

***** ssdPicture3 LANG ssd_alphanum_plus TESSDATA tessdata_ssd OEM 1 PSM 6 ****
0
0 0 1

Same image as above, but with blur, greyscale and convert to black and white to remove gaps

***** ssdPicture3-bw LANG 7seg TESSDATA tessdata_ssd OEM 1 PSM 6 ****
Failed to load any lstm-specific dictionaries for lang 7seg!!
888

***** ssdPicture3-bw LANG ssd_alphanum_plus TESSDATA tessdata_ssd OEM 1 PSM 6 ****
888

[wahid18benz]

thank you for this great work, can you show how I can test it for my dataset, what file should I Download and how to use it ? Thank you @Shreeshrii

[Shreeshrii]

wget https://github.com/Shreeshrii/tessdata_ssd/raw/master/7seg.traineddata

Copy the traineddata file to your tessdata-dir (where other traineddata files are).

Check with

tesseract --list-langs

Use with

-l 7seg

Similarly for the other trained data files.

[wahid18benz]

Thank you @Shreeshrii you 've done a great work, how I can train the model with my own dataset, I have a large dataset of multimeter seven segment, but it's not annotated, could you help me for the procedure for training and the different tools that I need ?
I have seen https://github.com/tesseract-ocr/tesseract/wiki/TrainingTesseract-4.00 but it's not too clear for me.
Thanks,

[Shreeshrii]

see https://github.com/Shreeshrii/tessdata_ssd
and
https://github.com/Shreeshrii/tessdata_ssd/blob/master/finetune.sh

Modify and run with your text.

[Shreeshrii]

For training with images see https://github.com/OCR-D/ocrd-train