A Novel Complete Denoising Solution for Old Malayalam Palm Leaf Manuscripts
Dhanya Sudarsan, Deepa Sankar
Abstract
Abstract Palm leaves were used in ancient culture as writing material for documenting traditional literature, scientific agreements, and history. Such scriptures are an integral part of our community and must be protected in the best way possible. But the extraction of data from palm leaf is a frustrating activity because of numerous challenges such as the enormous collection of noise characters and the difficulties in reading and interpreting the ancient Malayalam script. In this paper a novel denoising technique that eliminates all sorts of noises that can exist in palm leaf manuscript is developed. The major drawback of any palm leaf denoising method is, even after removing the noise in the palm leaves, the punch holes remain intact. Here, with the new technique developed, punch holes were completely eliminated, preserving the information in the manuscripts. Performance of this new denoising method was compared with several existing techniques and found that this new technique produced the best PSNR, SSIM, and MSE values of 19.40 dB, 0.244, and 0.001 respectively.