PaddleTextDetector
The detection half of a PaddleOCR preset — line-level boxes, no text.
- Import
import { PaddleTextDetector } from '@stabrise/scaledp/ocr'- Group
- Detect
- Reads
- image
- Writes
- boxes
- Needs
ppu-paddle-ocr
Runs only the detection model of a PaddleOCR preset. Use it when you want boxes without paying for recognition, or to feed a different recognizer.
import { Pipeline } from '@stabrise/scaledp'
import { PdfToImage } from '@stabrise/scaledp/pdf'
import { PaddleTextDetector, TesseractRecognizer } from '@stabrise/scaledp/ocr'
const rows = await new Pipeline([
new PdfToImage(),
new PaddleTextDetector({ outputCol: 'boxes' }),
new TesseractRecognizer({ inputCols: ['image', 'boxes'] }),
]).transform(file)Regions are line-level — one box per line of text, as in Python ScaleDP.
Boxes are axis-aligned with score: 1; the confidence a recognizer produces is a
separate thing. DetectorOutput.type is 'paddle'.
PaddleTextRecognizer detects and recognises in a single pass and ignores any
separate detector's boxes. Running both is how you compare what a detector finds
against what the recognizer acted on — it is not a way to feed one into the
other. For that, use PaddleRecognizer
or TesseractRecognizer.
The input may be a ScaleDpImage, an OffscreenCanvas or ImageData. An
unknown preset throws RangeError from the constructor; see
the preset list.
Parameters
| Parameter | Type | Default | Meaning |
|---|---|---|---|
preset | 'v6-small' | 'v6-medium' | 'v6-tiny' | 'v5-latin-mobile' | … (14 total) | 'v6-small' | Language/script pairing. Detection and recognition share the download. |
presetCol | string | '' | Take the model from a script-detection column, per page, instead of the fixed preset above. Empty pins it to the preset. Falls back to the preset whenever the column has no usable answer. |
scoreThreshold | number 0–1 | 0 | Drop regions below this confidence. 0 keeps everything. |