Canonical sample
Exact recipe
[
{
"condition": "perspective",
"parameters": {
"corner_offset_fraction": 0.0285,
"frame_scale": 0.847
},
"severity": 0.3
},
{
"condition": "low_light",
"parameters": {
"gain": 0.79,
"shot_noise_sigma": 11.7
},
"severity": 0.3
}
]Quality metrics
{
"blur_laplacian_variance": 1734.4092,
"brightness_mean": 185.2882,
"brightness_std": 27.8839,
"contrast_rms": 27.8839,
"damage_coverage": 0.999295,
"document_area_fraction": 0.999781,
"edge_distortion": 0.000158,
"glare_coverage": 0,
"mean_color_shift": 64.8008,
"shadow_coverage": 0.014977
}OCR output + metrics
{
"engine": "tesseract",
"engine_version": "5.5.0",
"exit_code": 0,
"field_metrics": {
"date_field_accuracy": 1,
"field_exact_match": 0.4,
"field_normalized_match": 0.4,
"matched_fields": 18,
"numeric_field_accuracy": 0.366667,
"total_fields": 45
},
"field_results": [
{
"exact_match": false,
"field_id": "currency",
"field_type": "currency",
"normalized_match": false,
"value": "USD"
},
{
"exact_match": true,
"field_id": "customer_address",
"field_type": "customer_address",
"normalized_match": true,
"value": "Melbourne VIC 3000"
},
{
"exact_match": true,
"field_id": "customer_name",
"field_type": "customer_name",
"normalized_match": true,
"value": "Civic Form Systems"
},
{
"exact_match": false,
"field_id": "discount",
"field_type": "discount",
"normalized_match": false,
"value": "$135.92"
},
{
"exact_match": true,
"field_id": "due_date",
"field_type": "due_date",
"normalized_match": true,
"value": "2026-02-15"
},
{
"exact_match": true,
"field_id": "invoice_date",
"field_type": "invoice_date",
"normalized_match": true,
"value": "2026-01-16"
},
{
"exact_match": true,
"field_id": "invoice_number",
"field_type": "invoice_number",
"normalized_match": true,
"value": "A26-277671"
},
{
"exact_match": false,
"field_id": "line_item_header",
"field_type": "line_item_header",
"normalized_match": false,
"value": "AMOUNT"
},
{
"exact_match": false,
"field_id": "payment_terms",
"field_type": "payment_terms",
"normalized_match": false,
"value": "Net 30"
},
{
"exact_match": true,
"field_id": "shipping",
"field_type": "shipping",
"normalized_match": true,
"value": "$0.00"
},
{
"exact_match": false,
"field_id": "subtotal",
"field_type": "subtotal",
"normalized_match": false,
"value": "$2,718.44"
},
{
"exact_match": false,
"field_id": "supplier_address",
"field_type": "supplier_address",
"normalized_match": false,
"value": "42 Alder Quay · Portland, OR 97205"
},
{
"exact_match": true,
"field_id": "supplier_name",
"field_type": "supplier_name",
"normalized_match": true,
"value": "Northwind Archive Supply"
},
{
"exact_match": false,
"field_id": "tax",
"field_type": "tax",
"normalized_match": false,
"value": "$206.60"
},
{
"exact_match": true,
"field_id": "total",
"field_type": "total",
"normalized_match": true,
"value": "$2,789.12"
},
{
"exact_match": true,
"field_id": "line_item_0_description",
"field_type": "line_item_description",
"line_item_index": 0,
"normalized_match": true,
"value": "Records indexing service"
},
{
"exact_match": true,
"field_id": "line_item_0_quantity",
"field_type": "line_item_quantity",
"line_item_index": 0,
"normalized_match": true,
"value": "15"
},
{
"exact_match": false,
"field_id": "line_item_0_unit_price",
"field_type": "line_item_unit_price",
"line_item_index": 0,
"normalized_match": false,
"value": "$63.03"
},
{
"exact_match": false,
"field_id": "line_item_0_tax",
"field_type": "line_item_tax",
"line_item_index": 0,
"normalized_match": false,
"value": "8.0%"
},
{
"exact_match": false,
"field_id": "line_item_0_amount",
"field_type": "line_item_amount",
"line_item_index": 0,
"normalized_match": false,
"value": "$945.45"
},
{
"exact_match": false,
"field_id": "line_item_1_description",
"field_type": "line_item_description",
"line_item_index": 1,
"normalized_match": false,
"value": "A4 document sleeves"
},
{
"exact_match": true,
"field_id": "line_item_1_quantity",
"field_type": "line_item_quantity",
"line_item_index": 1,
"normalized_match": true,
"value": "6"
},
{
"exact_match": false,
"field_id": "line_item_1_unit_price",
"field_type": "line_item_unit_price",
"line_item_index": 1,
"normalized_match": false,
"value": "$70.80"
},
{
"exact_match": false,
"field_id": "line_item_1_tax",
"field_type": "line_item_tax",
"line_item_index": 1,
"normalized_match": false,
"value": "8.0%"
},
{
"exact_match": false,
"field_id": "line_item_1_amount",
"field_type": "line_item_amount",
"line_item_index": 1,
"normalized_match": false,
"value": "$424.80"
},
{
"exact_match": true,
"field_id": "line_item_2_description",
"field_type": "line_item_description",
"line_item_index": 2,
"normalized_match": true,
"value": "Barcode label sheets"
},
{
"exact_match": true,
"field_id": "line_item_2_quantity",
"field_type": "line_item_quantity",
"line_item_index": 2,
"normalized_match": true,
"value": "4"
},
{
"exact_match": false,
"field_id": "line_item_2_unit_price",
"field_type": "line_item_unit_price",
"line_item_index": 2,
"normalized_match": false,
"value": "$134.19"
},
{
"exact_match": false,
"field_id": "line_item_2_tax",
"field_type": "line_item_tax",
"line_item_index": 2,
"normalized_match": false,
"value": "8.0%"
},
{
"exact_match": true,
"field_id": "line_item_2_amount",
"field_type": "line_item_amount",
"line_item_index": 2,
"normalized_match": true,
"value": "$536.76"
},
{
"exact_match": false,
"field_id": "line_item_3_description",
"field_type": "line_item_description",
"line_item_index": 3,
"normalized_match": false,
"value": "Numbered evidence bags"
},
{
"exact_match": true,
"field_id": "line_item_3_quantity",
"field_type": "line_item_quantity",
"line_item_index": 3,
"normalized_match": true,
"value": "1"
},
{
"exact_match": false,
"field_id": "line_item_3_unit_price",
"field_type": "line_item_unit_price",
"line_item_index": 3,
"normalized_match": false,
"value": "$67.97"
},
{
"exact_match": false,
"field_id": "line_item_3_tax",
"field_type": "line_item_tax",
"line_item_index": 3,
"normalized_match": false,
"value": "8.0%"
},
{
"exact_match": false,
"field_id": "line_item_3_amount",
"field_type": "line_item_amount",
"line_item_index": 3,
"normalized_match": false,
"value": "$67.97"
},
{
"exact_match": false,
"field_id": "line_item_4_description",
"field_type": "line_item_description",
"line_item_index": 4,
"normalized_match": false,
"value": "Heavy-duty file folders"
},
{
"exact_match": true,
"field_id": "line_item_4_quantity",
"field_type": "line_item_quantity",
"line_item_index": 4,
"normalized_match": true,
"value": "6"
},
{
"exact_match": false,
"field_id": "line_item_4_unit_price",
"field_type": "line_item_unit_price",
"line_item_index": 4,
"normalized_match": false,
"value": "$71.46"
},
{
"exact_match": false,
"field_id": "line_item_4_tax",
"field_type": "line_item_tax",
"line_item_index": 4,
"normalized_match": false,
"value": "8.0%"
},
{
"exact_match": false,
"field_id": "line_item_4_amount",
"field_type": "line_item_amount",
"line_item_index": 4,
"normalized_match": false,
"value": "$428.76"
},
{
"exact_match": false,
"field_id": "line_item_5_description",
"field_type": "line_item_description",
"line_item_index": 5,
"normalized_match": false,
"value": "Archive storage cartons"
},
{
"exact_match": true,
"field_id": "line_item_5_quantity",
"field_type": "line_item_quantity",
"line_item_index": 5,
"normalized_match": true,
"value": "5"
},
{
"exact_match": false,
"field_id": "line_item_5_unit_price",
"field_type": "line_item_unit_price",
"line_item_index": 5,
"normalized_match": false,
"value": "$62.94"
},
{
"exact_match": false,
"field_id": "line_item_5_tax",
"field_type": "line_item_tax",
"line_item_index": 5,
"normalized_match": false,
"value": "8.0%"
},
{
"exact_match": true,
"field_id": "line_item_5_amount",
"field_type": "line_item_amount",
"line_item_index": 5,
"normalized_match": true,
"value": "$314.70"
}
],
"ground_truth_text": "INVOICE Northwind Archive Supply 42 Alder Quay · Portland, OR 97205 BILL TO INVOICE NO. Civic Form Systems A26-277671 82 Wattle Parade INVOICE DATE Melbourne VIC 3000 2026-01-16 DUE DATE 2026-02-15 PAYMENT TERMS Net 30 CURRENCY USD DESCRIPTION QTY UNIT TAX AMOUNT Records indexing service 15 $63.03 8.0% $945.45 A4 document sleeves 6 $70.80 8.0% $424.80 Barcode label sheets 4 $134.19 8.0% $536.76 Numbered evidence bags 1 $67.97 8.0% $67.97 Heavy-duty file folders 6 $71.46 8.0% $428.76 Archive storage cartons 5 $62.94 8.0% $314.70 SUBTOTAL $2,718.44 DISCOUNT $135.92 SHIPPING $0.00 SALES TAX $206.60 TOTAL $2,789.12 Payment reference: A26-277671 · Fictional entities · synthetic invoice",
"methodology_version": "spatial-field-lines-v1",
"metrics": {
"cer": 0.374449,
"date_field_accuracy": 1,
"field_exact_match": 0.4,
"field_normalized_match": 0.4,
"matched_fields": 18,
"numeric_field_accuracy": 0.366667,
"total_fields": 45,
"wer": 0.601942
},
"sequence_metrics": {
"cer": 0.374449,
"reading_order": "spatial-field-lines-v1",
"wer": 0.601942
},
"stderr": "",
"text": "Northwind Archive Supply\n42 Alder Qtey_ Portland, on 97208\nCivic Form Systems A26-277671\n82 Watle Parade savor oare\nMelbourne Vic 3000\n2026-01-16\n2026-02-15\nNet 20\nusp\nRecords indexing service 1s $5202 on sonsuas\n[AA document sleeves 6 $70.00 0% $428.00\nBarcode label sheets 4 Bere aon $536.76\nNumbered evidence bogs 1 $6797 ox se7s7\nHeavy-duty fle folders 5 snas son $028.76\nArchive stage cartons 5 $62.04 0% $314.70\nsuetors $270.48\noiscounr 9135.92\nspine $0.00\nsates 7 $208.60\nora, $2,789.12\n",
"word_diff": [
"--- ground_truth",
"+++ tesseract",
"@@ -1,104 +1,79 @@",
"-INVOICE",
" Northwind",
" Archive",
" Supply",
" 42",
" Alder",
"-Quay",
"-·",
"+Qtey_",
" Portland,",
"-OR",
"-97205",
"-BILL",
"-TO",
"-INVOICE",
"-NO.",
"+on",
"+97208",
" Civic",
" Form",
" Systems",
" A26-277671",
" 82",
"-Wattle",
"+Watle",
" Parade",
"-INVOICE",
"-DATE",
"+savor",
"+oare",
" Melbourne",
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"+Vic",
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" 2026-01-16",
"-DUE",
"-DATE",
" 2026-02-15",
"-PAYMENT",
"-TERMS",
" Net",
"-30",
"-CURRENCY",
"-USD",
"-DESCRIPTION",
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"-UNIT",
"-TAX",
"-AMOUNT",
"+20",
"+usp",
" Records",
" indexing",
" service",
"-15",
"-$63.03",
"-8.0%",
"-$945.45",
"-A4",
"+1s",
"+$5202",
"+on",
"+sonsuas",
"+[AA",
" document",
" sleeves",
" 6",
"-$70.80",
"-8.0%",
"-$424.80",
"+$70.00",
"+0%",
"+$428.00",
" Barcode",
" label",
" sheets",
" 4",
"-$134.19",
"-8.0%",
"+Bere",
"+aon",
" $536.76",
" Numbered",
" evidence",
"-bags",
"+bogs",
" 1",
"-$67.97",
"-8.0%",
"-$67.97",
"+$6797",
"+ox",
"+se7s7",
" Heavy-duty",
"-file",
"+fle",
" folders",
"-6",
"-$71.46",
"-8.0%",
"-$428.76",
"+5",
"+snas",
"+son",
"+$028.76",
" Archive",
"-storage",
"+stage",
" cartons",
" 5",
"-$62.94",
"-8.0%",
"+$62.04",
"+0%",
" $314.70",
"-SUBTOTAL",
"-$2,718.44",
"-DISCOUNT",
"-$135.92",
"-SHIPPING",
"+suetors",
"+$270.48",
"+oiscounr",
"+9135.92",
"+spine",
" $0.00",
"-SALES",
"-TAX",
"-$206.60",
"-TOTAL",
"+sates",
"+7",
"+$208.60",
"+ora,",
" $2,789.12",
"-Payment",
"-reference:",
"-A26-277671",
"-·",
"-Fictional",
"-entities",
"-·",
"-synthetic",
"-invoice"
]
}Generation provenance
{
"artifact_id": "dt-d965625117e7a4c838b9c868",
"degradation_asset_registry_version": null,
"generated_at": "2026-09-05T06:11:06.159874+00:00",
"recipe": null,
"renderer": "canonical",
"renderer_version": "pillow-opencv-v0.5.0-physical-assets-v1",
"request_sha256": "d965625117e7a4c838b9c868a009fc0f843e8d85cb2e7f462c76b16ca2942523",
"seed": 10600,
"software": {
"numpy": "2.2.6",
"opencv": "4.12.0",
"pillow": "11.3.0",
"python": "3.12.14"
},
"template_id": "invoice-atlas-ledger-v1"
}