> For the complete documentation index, see [llms.txt](https://anuvaad.sunbird.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://anuvaad.sunbird.org/modules/ocr-content-handler.md).
# OCR Content handler
This microservice is served with multiple APIs to handle and manipulate the digitized data from `anuvaad-gv-document-digitize`, which is part of the Anuvaad system. This service is functionally similar to the Content Handler service but differs since the output document (digitized doc) structure varies.
## Modules
### OCR Document Modules
#### DigitalDocumentSave
API to save translated documents. The JSON request object is generated from `anuvaad-gv-document-digitizer` and later updated by tokenizer. This API is being used internally.
**Mandatory parameters:** `files`, `record_id`
**Actions:**
* Validating input params as per the policies
* The document to be saved is converted into blocks of pages
* Each block contains regions such as line, word, table, etc.
* Every block is created with UUID
* Saving blocks in the database
DigitalDocumentSave CURL Request
```bash
curl --location --request POST 'http://localhost:5001//anuvaad/ocr-content-handler/v0/ocr/save-document' \
--header 'Content-Type: application/json' \
--data-raw '{
"jobID": "BM-15913540488115873",
"state": "INITIATED",
"status": "STARTED",
"stepOrder": 0,
"workflowCode": "abc",
"taskID": "vision_ocr1615969391110792",
"tool": "GVOCR",
"message": "OCR",
"metadata": {
"module": "WORKFLOW-MANAGER",
"receivedAt": 15993163946431696,
"sessionID": "4M1qOZj53tIZsCoLNzP0oP",
"userID": "d4e0b570-b72a-44e5-9110-5fdd54370a9d"
},
"files": [{
"file": {
"identifier": "string",
"name": "20695.pdf",
"type": "json"
},
"config": {
"language": "en"
},
"pages": [
{
"identifier": "958b00e5-7864-4a73-a3ed-7640b1c3c1cf",
"resolution": 300,
"path": "/home/naresh/anuvaad/anuvaad-etl/anuvaad-extractor/document-processor/gv-document-digitization/upload/20695_41c92afd-53fd-4446-aaee-bedd194c59cf/images/206950001-1.jpg",
"boundingBox": {
"vertices": [{
"x": 0,
"y": 0
}, {
"x": 2481,
"y": 0
}, {
"x": 2481,
"y": 3508
}, {
"x": 0,
"y": 3508
}]
},
"page_no": 0,
"regions": [
{
"identifier": "1e0f1313-4c2f-47f3-9971-a797452439f8",
"boundingBox": {
"vertices": [{
"x": 0,
"y": 0
}, {
"x": 2481,
"y": 0
}, {
"x": 2481,
"y": 3508
}, {
"x": 0,
"y": 3508
}]
},
"class": "BGIMAGE",
"data": "/home/naresh/anuvaad/anuvaad-etl/anuvaad-extractor/document-processor/gv-document-digitization/upload/20695_41c92afd-53fd-4446-aaee-bedd194c59cf/images/206950001-1_bgimages_.jpg"
}
]
}
]
}]
}'
```
#### DigitalDocumentUpdateWord
API to update the text in the digitized doc. RBAC enabled.
**Mandatory parameters:** `words`, `record_id`, `region_id`, `word_id`, `updated_word`
**Actions:**
* Validating input params as per the policies
* Looping over the regions to locate the word to be updated
* Updating the word and setting a flag `save=True`
DigitalDocumentUpdateWord CURL Request
```bash
curl --location --request POST 'https://auth.anuvaad.org/anuvaad/ocr-content-handler/v0/ocr/update-word' \
--header 'userID: d4e0b570-b72a-44e5-9110-5fdd54370a9d' \
--header 'auth-token: eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJ1c2VyTmFtZSI6ImphaW55LmpveUB0YXJlbnRvLmNvbSIsInBhc3N3b3JkIjoiYickMmIkMTIkcXFjYUM2WW5yU2RFM2hDT2h4aXpnT0ZILjBxeFR4UWJBTHloZDFjTjBFOWluSnRqaTguOWknIiwiZXhwIjoxNjE2NTcxMjM3fQ.vCOncRM7BNK0qsv0OWnioIDfy-lOusTcMERsusm_ics' \
--header 'Content-Type: application/json' \
--data-raw '{
"words":[
{
"record_id":"A_OD10GV-msJYb-1616508492867|0-1616508495552232.json",
"region_id":"7df5afdc-6aac-498d-af2c-e73cdf438b90",
"word_id":"78f682ba-5571-4099-9055-f51d4d82368a",
"updated_word":"Constituency"
}
]
}'
```
#### DigitalDocumentGet
API to fetch back the document. RBAC enabled.
**Mandatory parameters:** `record_id`, `start_page`, `end_page`
**Actions:**
* Validating input params as per the policies
* Returning back the document as an array of pages
DigitalDocumentGet CURL Request
```bash
curl --location --request GET 'https://auth.anuvaad.org/anuvaad/ocr-content-handler/v0/ocr/fetch-document?recordID=A_FWLBOD15GOT-eAIRP-1632812802745%7C0-16328129323475454.json&start_page=0&end_page=0' \
--header 'auth-token: eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJ1c2VyTmFtZSI6ImphaW55LmpveUB0YXJlbnRvLmNvbSIsIkphaW55QDEyMyI6ImInJDJiJDEyJFh4VU9ZbVBGZ1NyMkhuclFZNTVqR2U3a3VmUmRoakxmTTdjU2NLSkxHZVNTZkxBQmJ4UGlPJyIsImV4cCI6MTYzMzA4Mzk2OX0.-hWfzbCR7ErGjK8B8PjnkpvtVBm1Rpavmjast0E4P4I'
```
---
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