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Documentation

Sharpen

Description

The sharpen parameter increases the definition of the edges of objects in an image.

API Pattern

sharpen=a{value},r{value},t{value}

Parameter

Parameter Description
sharpen Sharpness of the output image.

Parameter Values

Value Units Description
a{value} Float Amount - Decimal number between 0 and 10.
r{value} Float Radius - Decimal number between 1 and 2000.
t{value} Integer Threshold - whole number between 0 and 255.

Notes

  1. The sharpen parameter is an implementation of an unsharp mask.

Examples

Description HTML Demo
Increase Sharpness - Increase the sharpness of the image by amount:5, radius:2, and threshold:0. <img src="image.jpg?sharpen=a5,r2,t0"/> Example