Research Article
Document Image Enhancement with Perspective Transformation using Python
@INPROCEEDINGS{10.4108/eai.21-10-2022.2329633, author={Indra Bayu Muktyas and Nerru Pranuta Murnaka and Samsul Arifin and Wikky Fawwaz Al Maki}, title={Document Image Enhancement with Perspective Transformation using Python}, proceedings={Proceedings of the 2nd International Conference on Education, Humanities, Health and Agriculture, ICEHHA 2022, 21-22 October 2022, Ruteng, Flores, Indonesia}, publisher={EAI}, proceedings_a={ICEHHA}, year={2023}, month={5}, keywords={scanline gradient line perspective transformation measure of central tendency python}, doi={10.4108/eai.21-10-2022.2329633} }- Indra Bayu Muktyas
Nerru Pranuta Murnaka
Samsul Arifin
Wikky Fawwaz Al Maki
Year: 2023
Document Image Enhancement with Perspective Transformation using Python
ICEHHA
EAI
DOI: 10.4108/eai.21-10-2022.2329633
Abstract
Many people need soft files of their important documents. One of the technological sophistications that are currently developing is to use a smartphone camera to photograph a document. However, the results from the photo are not like the results with a precision-shaped scanner. Based on this, we developed a program that can improve the quality of a distorted (imprecise) document image to become a scanned-like rectangle image. In addition, the purpose of this study is to find out some of the mathematical theories behind it. The method we use is a literature study on line gradients, perspective transformations, and central tendency. Then we apply it to the python program. The results of this study are gradients can be used to determine the boundaries of the rectangular area of the document image. The perspective transformation can be used to change a shape from an arbitrary quadrangle to a rectangle. Central tendency (mean, median, and mode) can be used to fill in the gaps in the perspective transformed image.