SampleOffset method:
Halftone images are formed only by the varying force of strokes of the engraving needle. One point of the original image corresponds to one stroke of the engraving needle. This method is perfect for small details of images and allows you to make both large portraits and miniatures.

Methods of rasterisation (Floyd, Jarvis, etc.): Halftone images are formed by varying density of strokes of the engraving needle (the darker portion of the image is, the less impacts are made). The methods differ by the algorithms of points alignment. Even though these methods conceal small details of images, they also hide the shortcomings of the worked stone (various inclusions such as mica or coal are concealed).