Post-capture image refocusing is a highdemand application, where certain portions of the image are refocused to attract the viewers' attention towards it. Focusing on a specific element of the image is achievable by calculating the depth of the image. Objects are at similar depth during the capture, which brings in the depth error, and the desired object is out of focus. During such circumstances, professionals post-capture refocus the image to obtain the desired output. This paper gives an analysis of calculating the depth of the image required to synthetically blur non-preferred portions and different techniques used to deblur and produce the desired output image.

Keywords : Bokeh, depth map, Depth of field, Synthetic refocus in.