sharpening

v.

make sharp or sharper

"sharpen the knives"

make sharp or sharper

"We had to sharpen our arguments"

become sharp or sharper

"The debate sharpened"

put (an image) into focus

同义词：focusfocalizefocalise

make (images or sounds) sharp or sharper

raise the pitch of (musical notes)

give a point to

同义词：taperpoint

make (one's senses) more acute

"This drug will sharpen your vision"

同义词：heighten

Spectral sharpening: sensor transformations for improved color constancy.
Application of filter sharpening to cascaded integrator-comb decimation filters
Application of filter sharpening to cascaded integrator-comb decimation filters
Comparison of Pansharpening Algorithms: Outcome of the 2006 GRS-S Data-Fusion Contest
Optimised glucocorticoid therapy: the sharpening of an old spear
An Efficient Pan-Sharpening Method via a Combined Adaptive PCA Approach and Contourlets
Strategy, human resource management and performance: Sharpening line of sight ☆
Process for enhancing the spatial resolution of multispectral imagery using pan-sharpening
Process for enhancing the spatial resolution of multispectral imagery using pan-sharpening
An IHS and wavelet integrated approach to improve pan-sharpening visual quality of natural colour IKONOS and QuickBird images