With this tab you can measure size of arbitrary object on the image and its contrast relatively to background.
Order of measuring:
1. Specify background
Place the cursor on the image, press left mouse button and move the cursor. Specify background region by selection window and release the mouse button.
On the Background panel the following data is displayed:
2. Specify an object
Click the switch Step 2. Specify an object.
Place the cursor on the image, press left mouse button and move the cursor. Specify the object by selection window and release mouse button.
On the Object region panel the following data will be displayed:
Click the Step 3.Calculation button.
In the Object-background contrast box the contrast between object and background is displayed.
The contract is calculated by the formula:
Contrast = Avarage Brightness of the object – Avarage background brightness.
When moving the cursor over the image on the tab bottom the following data is displayed: