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The pixels with the largest gradient values in the direction of the gradient become edge pixels, and edges may be traced in the direction perpendicular to the gradient direction. One example of an edge detection algorithm that uses gradients is the Canny edge detector. Image gradients can also be used for robust feature and texture matching.
When this line reaches the left edge of the frame, shot B will completely fill the scene, and the transition is complete. This example describes a vertical line wipe, though this is but one type of wipe. Another common type of wipe uses objects in the scene, rather than an invisible vertical line.
A linear, or axial, color gradient. In color science, a color gradient (also known as a color ramp or a color progression) specifies a range of position-dependent colors, usually used to fill a region. In assigning colors to a set of values, a gradient is a continuous colormap, a type of color scheme.
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