Sharpen provides several strategies for enhancing image sharpness. 'Sharp' and 'Ultra' use 3x3 convolution masks, while 'mask' applies a technology known as unsharp masking, where a blurred version of the original image is subtracted.
| Parameter | Description | Required | Allowed Values | Default |
|---|---|---|---|---|
| strategy | Decides which sharpen strategy to use internally. | No | [sharp, ultra, mask] | sharp |
| id | HTML id attribute. | No | [CData] | n/a |
| image | Image source URI. | Yes | [URI] | n/a |
| encode | Encoding format for the resulting image. | No | [png , gif , jpg , tif , bmp] | Source image format |
| width | Image width. | No | [CData] | n/a |
| height | Image height. | No | [CData] | n/a |
| title | Image title shown on tooltips. | No | [CData] | n/a |
| border | Image border width. | No | [CData] | n/a |
| cssClass | css class applied to the image tag. | No | [CData] | n/a |
| cssStyle | css style directly applied to the image tag. | No | [CData] | n/a |
| onclick | Javascript handling for this event. | No | [Javascript] | n/a |
| ondblclick | Javascript handling for this event. | No | [Javascript] | n/a |
| onmousedown | Javascript handling for this event. | No | [Javascript] | n/a |
| onmouseup | Javascript handling for this event. | No | [Javascript] | n/a |
| onmouseover | Javascript handling for this event. | No | [Javascript] | n/a |
| onmousemove | Javascript handling for this event. | No | [Javascript] | n/a |
| onmouseout | Javascript handling for this event. | No | [Javascript] | n/a |
| onkeydown | Javascript handling for this event. | No | [Javascript] | n/a |
| onkeyup | Javascript handling for this event. | No | [Javascript] | n/a |