Bokeh is out-of-focus areas in a photo. Bokeh is determined by the way how the lens renders unsharp points of light. It's often used for creating artistic effects - to blur backgrounds for visual selection of a main object in a scene. In photography, bokeh effect depends on the shape of the aperture. Various shapes let you achieve artistic background blur effects, for example with stars.
With the program AKVIS Refocus you can make a variety of figure bokeh on any photo.
(hover the cursor over the image to see the original version)
Click on the button in the Settings panel and select a shape from a list. All light spots in the out-of-focus area will change in the selected shape.
Use these parameters to adjust the look of the spots of light in the blurred area:
Note: Deformation and Rotation parameters are disabled for the 1st shape (circle).