Document Scanner SDK

ImageCompression Class

class ImageCompression(compressionRate: Float) : ScanningSdkLibrary.Instance

How page images are compressed inside the PDF, trading file size against fidelity.

A greyscale page at a rate of 1 or below is stored losslessly. Anything else in colour or greyscale is encoded as JPEG 2000 at this rate, where a higher number compresses harder. Monochrome pages ignore the rate entirely — they are always JBIG2.

Parameters

  • compressionRate — how hard to compress colour and greyscale pages.

Constructors

ImageCompression

constructor(compressionRate: Float)

Types

Companion

object Companion

Defaults for PDF output.

Functions

close

@Synchronized open override fun close()

Releases the native memory held by this instance immediately instead of waiting for the garbage collector.

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