Manual

June 2004 Isis® Sonar User's Manual, Volume 2

Gamma

(slider bar)

Gamma is a way of logarithmically compensating for low intensity

pixels that may be present in some images. Sliding the bar to the

right increases the gamma index for the image (maximum

gamma = +10); sliding it to the left decreases it (minimum

gamma = +0.10). The value +1.00 represents midpoint of the

scale (no gamma).

Rotate

(slider bar)

Sliding the bar to the right rotates the image clockwise (0° to

180° ); sliding the bar left rotates it counterclockwise (-1° to -

179° ). Although you see the rotated image in the thumbnail

window, the rotation in the Target image does not take effect

until

Apply Rotate is clicked.

Sharp

(slider bar)

Sliding the bar to the right increases sharpness (emphasizes fine

edges in the image). The bar initially is at the left and displays a

value of 0, indicating no sharpness is being applied. Maximum

sharpness is achieved when the bar is all the way to the right

and displays a value of 30. (The units are just relative and are

not meant to suggest any mathematically based values.)

Haze

(slider bar)

Sliding the bar to the right increases haze (blurs or de-

emphasizes fine edges in the image). The bar initially is at the

left and displays a value of 0, indicating no haze is being applied.

Maximum haze (blur) is achieved when the bar is all the way to

the right and displays a value of 10.

Appendix E: Using the Target Utility