Image Scope

1. Usages of Image Scope

When handle image, scope can be used to select pixels to be operated. It is set of conditions to manufacture part of image.

2. Define Scope

2.1 Area

  1. "Area" limits coordinates of pixels.
  2. Option "Area exclude" means pixels outside the area.

2.2 Colors

  1. "Colors" matches pixels selected by "Area".
  2. To add colors, click button Color to pop palette, or check "Pick color" and click image.
  3. Option "Color exclude" means not matching any color in "Colors" list.
  4. Options about how to match colors.

2.3 Other Options to Select Pixels

  1. Background image. Can be any image or empty.
    It does not affect usage of scope. That is, scope defined against an image can be applied to any other image.
  2. Option "Scope exclude" means pixels outside the scope.
  3. Option "Handle transparent".

3. Types of Scope

3.1 Rectangle, Circle, Ellipse, Polygon

  1. Drag anchors to adjust shape.
  2. Drag shape to translate it.
  3. Right click image to pop menu of shape.
  4. Set Colors list and options about how to match colors. Empty list means not limiting colors.
  5. For polygon, left click image to add points for the polygon.

3.2 Matting

  1. "Area" is a list of start points for matting. .
  2. Click image to add points
  3. The algorithm only matches colors in the image itself, so need not colors list.

3.3 Colors

  1. "Area" is all pixels.
  2. Select pixels by matching the Colors list.

3.4 Outline

  1. Select a picture with transparent background and its outline is fetched as "Area".
  2. Not matching colors, so need not colors list.

4. Display Scope

To indicate selected pixels obviously, "masked image" is displayed:

  1. Selected pixels are displayed as their orignial colors.
  2. Unselected pixels are displayed as blending colors in orignial colors, mask color, and mask opacity.
  3. For image mostly in dark colors, suggest light color as mask color.
  4. For image mostly in light colors, suggest dark color as mask color.
  5. Click button "Pop"(CTRL+P) to show source image, selected pixels, and masked image.

5. Manage Scopes

  1. When handle image, conditions of selecting pixels can be saved as scope.
  2. When handle image, saved scope can be applied as conditions to select pixels.
  3. Scopes are saved and managed in tree.