egg/OCR

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egg 940a406dce chore: backup before code cleanup

Backup commit before executing remove-unused-code proposal.
This includes all pending changes and new features.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

2025-12-11 11:55:39 +08:00

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OCR Processing - Delta Spec

ADDED Requirements

Requirement: REQ-OCR-PRESETS - Document Type Presets

The system MUST provide predefined OCR processing configurations for common document types.

Available presets:

text_heavy: Optimized for text-heavy documents (reports, articles)
datasheet: Optimized for technical datasheets
table_heavy: Optimized for documents with many tables
form: Optimized for forms and applications
mixed: Balanced configuration for mixed content
custom: User-defined configuration

Scenario: User selects datasheet preset

Given a user uploading a technical datasheet
When they select the "datasheet" preset
Then the system applies conservative table parsing mode
And disables wireless table detection
And sets layout threshold to 0.65

Scenario: User selects text_heavy preset

Given a user uploading a text-heavy report
When they select the "text_heavy" preset
Then the system disables table recognition
And focuses on text extraction

Requirement: REQ-OCR-PARAMS - Advanced Parameter Configuration

The system MUST allow advanced users to configure individual PP-Structure parameters.

Configurable parameters include:

Table parsing mode (full/conservative/classification_only/disabled)
Table layout threshold (0.0-1.0)
Wired/wireless table detection toggles
Layout detection model selection
Preprocessing options (orientation, unwarping, textline)
Recognition module toggles (chart, formula, seal)

Scenario: User adjusts table layout threshold

Given a user experiencing table over-detection
When they increase table_layout_threshold to 0.7
Then fewer regions are classified as tables
And text regions are preserved correctly

Scenario: User disables wireless table detection

Given a user processing a datasheet with cell explosion
When they disable enable_wireless_table
Then only bordered tables are detected
And structured text is not split into cells

Requirement: REQ-OCR-API - OCR Configuration API

The task creation API MUST accept OCR configuration parameters.

API accepts:

ocr_preset: Preset name to apply
ocr_config: Custom configuration object (overrides preset)

Scenario: Create task with preset

Given an API request with ocr_preset="datasheet"
When the task is created
Then the datasheet preset configuration is applied
And the task processes with conservative table parsing

Scenario: Create task with custom config

Given an API request with ocr_config containing custom values
When the task is created
Then the custom configuration overrides defaults
And the task uses the specified parameters

MODIFIED Requirements

Requirement: REQ-OCR-DEFAULTS - Default Processing Configuration

The system default configuration MUST be conservative to prevent over-detection.

Default values:

table_parsing_mode: "conservative"
table_layout_threshold: 0.65
enable_wireless_table: false
use_doc_unwarping: false

Patch behaviors MUST be disabled by default:

cell_validation_enabled: false
gap_filling_enabled: false
table_content_rebuilder_enabled: false

Scenario: New task uses conservative defaults

Given a task created without specifying OCR configuration
When the task is processed
Then conservative table parsing is used
And wireless table detection is disabled
And no post-processing patches are applied

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