===== Sharpening =====
Sharpening is performed by using the **Sharpening** command from the  [[меню_математика|Mathematics Menu]] or by using the button

{{:en:processing:sharpen_en.jpg|}}

This operation emphasizes differences between adjacent pixels’ hues and distinguishes barely visible details. During processing of every pixel of the image, the sharpness core – a 3x3 matrix – is used. The central coefficient in the sharpness matrix is more than 1, while others are negative. Thus, the existing contrast between the pixel’s color and the colors of its neighbors increases. The final image looks sharper than the original. This function uses the following matrix: 

{{:processing:sharpen_1.jpg|}}.

During the reprocessing of the image sharpness can further increase.