Transform Toolbar - Images

images\tbar_transimage.gif

 

Target box Operation box Source / argument box

 

The Transform toolbar makes changes throughout the entire image. If a selection is present it will operate only on those pixels in the selection. If no selection is present it will apply to all pixels in the image.

 

The Transform toolbar consists of three boxes, from left to right: a target box, the operation box, and a source / argument box.

 

Target box

Also known as the scope box. The pixels that will be affected, altered or which will control the operation. Choices in the target box will be [All Pixels], [Selection] or the names of any saved selections that have been saved in the Selections pane .

Operation box

The function to be applied. The operation box is context sensitive and will show only those operations that make sense for images.

Source / argument box

The value to be used. Depending on the operator, this may be another pixel set or a value entered by the user. Many operators, such as Desaturate do not require a source or argument. The source / argument box will not be enabled for such operators.

 

We use dark blue, black, and violet bold face fonts in this topic to distinguish the three boxes to make examples and explanation more clear. In real life Manifold uses the same black font color in all three Transform toolbar boxes.

 

Using the Transform toolbar

 

1. Click on the map layer or image that contains the target pixels.

2. Make a selection if the operation is to be applied just to the selection and choose [Selection] in the target box. Alternately, choose the name of a previously saved selection.

3. Choose the desired operator in the operation box.

4. Choose or specify a value in the source / argument box, if this operation requires it.

5. Press Apply.

 

Target box

 

images\tbar_transimage_pix.gif

 

The left-most box specifies the target pixels. These are the pixels that will be affected, altered or which will control the operation. The example above shows that there is no selection present, so the Transform toolbar will apply the Transform function to all of the pixels in the image. If we make a selection, the target box would include a [Selection] choice so that whatever operation we apply with the Transform toolbar will act only on those pixels that are part of the current selection. We could also choose the name of a saved selection.

 

Operation box

 

images\tbar_transimage_opr.gif

 

Choose a function from the long list of operators available in the operation box. The example shows Add Noise, which will add random noise pixels to the image. Note that many operators in the Transform toolbar's operation box are simplified versions of more flexible operators in the Image menu. The Transform Operators - Images topic lists operators available for use with images.

 

Source / argument box

 

images\tbar_transdraw_sa_none.gif

 

Many operators do not require any sources or arguments. For these functions the source / argument box will be disabled.

 

images\tbar_transdraw_sa_combo.gif

 

Other functions will require specification of a source. This may an object set such as [All Pixels], [Selection] or the names of saved selections, all of which can be chosen from the combo box.

 

images\tbar_transdraw_sa_text.gif

 

Some functions require an argument value that is entered by the user. To enter a value, click into the source / argument box, enter the value using the keyboard and then press Enter.

 

Examples

 

[All Pixels] Add Noise - Add random noise throughout the image.

 

[Selection] Add Noise - Add random noise only to those pixels in the selection.

 

[Selection] Brightness 64 - Reduce brightness to half the existing level (existing level is taken to be 128) for all pixels in the selection.

 

Sky Brightness 20 - Increase brightness for all pixels in the saved selection called Sky.

 

See Also

 

Transform Operators - Images