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Release Notes

8.1.2 (02/20/2020)


  • Added a new property extendedImageInfoQueryLevel for the method AcquireImage that allows setting up how the library queries extended image info items. In version 8.1, the default level would result in scanning failure or serious performance issues with some scanners.


  • Fixed the handle leak issue of OCR.
  • Fixed the bug that the extended image info messages are not returned when setting IfGetExtendedImageInfo to true.
  • Fixed the bug that mouse scroll moving up only.
  • Fixed the bug that cameraManager.Dispose will throw an exception when there is no camera connected.
  • Fixed the bug that some HD cameras failed to initialize.


  • Some optimizations on the samples.

Previous Changes