Profile - Choose a preprocessing profile for the specified image or UI element to achieve a better OCR read. The following options are available: None - does not apply a preprocessing profile; Screen - preprocessing suitable for remote desktop applications; Scan - preprocessing suitable for scanned files; Legacy - uses the engine's default settings for preprocessing images, this is the default option.
Scale - The scaling factor of the selected UI element or image. The higher the number is, the more you enlarge the image. This can provide a better OCR read and it is recommended with small images. If you want to scale down, values between 0 and 1 are also accepted. By default, the value is 2.