Owned RGBA8 working raster passed to an OCR provider. Provider geometry must refer to these input pixels.
RGBA bytes owned independently of caller PDF input and engine memory.
Eight-bit red/green/blue/alpha channel order.
Input raster height in pixels.
Bytes per row; the bundled Tesseract provider requires width × 4.
Input raster width in pixels.
Owned RGBA8 working raster passed to an OCR provider. Provider geometry must refer to these input pixels.