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Using detail-in-context lenses for accurate digital image cropping and measurement
| Details |
Inventors: Jetha, Zeenat; Carlisle, Andrew; Skiers, Andrew; Baar, David;
Assignee: Idelix Software Inc. (Vancouver, CA)
Primary Examiner: Luu; Matthew
Assistant Examiner:
Attorney, Agent or Firm: Conneely; Joseph McCarthy Tetrault LLP
A method for cropping a computer generated original image on a display, comprising the steps of: adjusting a user-selected movable boundary on the original image to define a cropped image within the boundary, the boundary defined by two or more points on the original image; and, distorting the original image in regions surrounding the points, whereby the boundary is accurately positioned for cropping. And, a method for measuring within a computer generated original image on a display, comprising the steps of: adjusting a user-selected movable line segment on the original image to define points on the original image for measuring between; and, distorting the original image in regions surrounding the points, whereby the points are accurately positioned for measuring. |
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DETAILED DESCRIPTION According to one aspect of the invention, there is provided a method for cropping a computer generated original image on a display, comprising the steps of: adjusting a user-selected movable boundary on the original image to define a cropped image within the boundary, the boundary defined by two or more points on the original image; and, distorting the original image in regions surrounding the points, whereby the boundary is accurately positioned for cropping.
Preferably, the step of distorting further includes the steps of: creating a lens surface for one or more of the regions; and, transforming the original image by applying a distortion function defining the lens surface to the original image.
Preferably, the step of creating further includes the step of displaying a GUI over one or more of the regions for adjusting the lens surface.
Preferably, the lens surface includes a focal region and a base region and the GUI includes: a slide bar icon for adjusting a magnification for the lens surface; a slide bar icon for adjusting a degree of scooping for the lens surface; a bounding rectangle icon with at least one handle icon for adjusting a size and a shape for the focal region; a bounding rectangle icon with at least one handle icon for adjusting a size and a shape for the base region; a move icon for adjusting a location for the lens surface on the boundary; a pickup icon for adjusting a location for the base region within the original image; and, a fold icon for adjusting a location for the focal region relative to the base region.
Preferably, the adjusting is performed by moving a cursor on the display with a pointing device, the cursor is an icon, the pointing device is a mouse, and the movable boundary is a polygon.
Preferably, the original image has one or more layers, the regions have a predetermined selection of these layers, and the cropped image has a predetermined selection of these layers.
Advantageously, by using detail-in-context lenses to select points defining an area for a cropped image, a user can view a large area (i
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