95 lines
3.2 KiB
Go
95 lines
3.2 KiB
Go
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package main
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import (
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"kreuzberg"
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)
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func main() {
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// Example 1: Basic hierarchy extraction
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// Enabled with default KClusters=6 for standard H1-H6 heading hierarchy.
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// Extract bounding box information for spatial layout awareness.
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hierarchyConfigBasic := kreuzberg.HierarchyConfig{
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Enabled: func(b bool) *bool { return &b }(true),
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KClusters: func(i int) *int { return &i }(6), // Default: creates 6 font size clusters (H1-H6 structure)
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IncludeBbox: func(b bool) *bool { return &b }(true), // Include bounding box coordinates
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OcrCoverageThreshold: nil, // No OCR coverage threshold
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}
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pdfConfigBasic := kreuzberg.PdfConfig{
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Hierarchy: &hierarchyConfigBasic,
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}
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extractionConfigBasic := kreuzberg.ExtractionConfig{
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PdfOptions: &pdfConfigBasic,
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}
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// Use with ExtractFileSync or ExtractBytesSync
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// result, err := kreuzberg.ExtractFileSync("document.pdf", extractionConfigBasic)
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// Example 2: Custom KClusters for minimal structure
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// Use 3 clusters for simpler hierarchy with minimal structure.
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// Useful when you only need major section divisions (Main, Subsection, Detail).
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hierarchyConfigMinimal := kreuzberg.HierarchyConfig{
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Enabled: func(b bool) *bool { return &b }(true),
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KClusters: func(i int) *int { return &i }(3), // Minimal clustering: just 3 levels
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IncludeBbox: func(b bool) *bool { return &b }(true),
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OcrCoverageThreshold: nil,
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}
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pdfConfigMinimal := kreuzberg.PdfConfig{
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Hierarchy: &hierarchyConfigMinimal,
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}
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extractionConfigMinimal := kreuzberg.ExtractionConfig{
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PdfOptions: &pdfConfigMinimal,
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}
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_ = extractionConfigMinimal
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// Example 3: With OCR coverage threshold
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// Trigger OCR if less than 50% of text has font data.
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// Useful for documents with mixed digital and scanned content.
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ocrThreshold := 0.5
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hierarchyConfigOcr := kreuzberg.HierarchyConfig{
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Enabled: func(b bool) *bool { return &b }(true),
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KClusters: func(i int) *int { return &i }(6),
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IncludeBbox: func(b bool) *bool { return &b }(true),
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OcrCoverageThreshold: &ocrThreshold, // Trigger OCR if text coverage < 50%
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}
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pdfConfigOcr := kreuzberg.PdfConfig{
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Hierarchy: &hierarchyConfigOcr,
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}
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extractionConfigOcr := kreuzberg.ExtractionConfig{
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PdfOptions: &pdfConfigOcr,
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}
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_ = extractionConfigOcr
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}
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// Field descriptions:
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//
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// Enabled: *bool (default: true)
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// - Enable or disable hierarchy extraction
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// - When false, hierarchy structure is not analyzed
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//
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// KClusters: *int (default: 6, valid: 1-7)
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// - Number of font size clusters for hierarchy levels
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// - 6 provides H1-H6 heading levels with body text
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// - Higher values create more fine-grained hierarchy
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// - Lower values create simpler structure
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//
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// IncludeBbox: *bool (default: true)
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// - Include bounding box coordinates in hierarchy blocks
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// - Required for spatial layout awareness and document structure
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// - Set to false only if space optimization is critical
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//
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// OcrCoverageThreshold: *float64 (default: nil)
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// - Range: 0.0 to 1.0
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// - Triggers OCR when text block coverage falls below this fraction
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// - Example: 0.5 means "run OCR if less than 50% of page has text data"
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// - nil means no OCR coverage-based triggering
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