Development of digital image re-colouring Algorithm
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Date
2018-06
Authors
Noorfairuse Mohamad Noor
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Abstract
Re-colouring image or colorization is the process of adding colour to
monochrome image or greyscale image which it is typically involve segmentation of
images into regions and tracking these regions across image sequence. Colorization
have been developed from time to time in order to improve its performance and to make
sure that the system developed is user friendly. First colorization method was by
determined the pixels region manually and added colour to the region manually. This
colorization method spends a lot of cost and time consume. Another method is example based colorization by transferring colour from a reference colour image. The artistic
control of this method is quite indirect because the user is required to find a references
image containing the desired colour over region. This thesis will present the simple
colorization method which is scribble colorization method that based on a simple
premise which is neighbouring pixels in space time that have similar intensities should
have similar colour. The user only needs to annotate the image with a few colour
scribbles and the indicated colours are automatically propagated in both space and time
to produce a fully colorized image. Qualitative analysis and quantitative analysis are
used to verify the result images. The result images are compared based on the quality of
the colour and the value of PSNR. High value of PNSR indicated that the result image
and the ground truth image are similar.