@article {10.3844/jcssp.2006.612.614, article_type = {journal}, title = {Knowledge Based System for Visual Computing of Depth in 2D Images of Geometric Objects Like Straight Lines, Planes and Solids and their Applications in Engineering Graphics}, author = {Rao, M. Narayana and VaithyaNathan, V.}, volume = {2}, number = {8}, year = {2006}, month = {Aug}, pages = {612-614}, doi = {10.3844/jcssp.2006.612.614}, url = {https://thescipub.com/abstract/jcssp.2006.612.614}, abstract = {An attempt was made in this study, to develop a ”Knowledge Based System” for i)computing the depth (or the third dimension) of 3D objects, ii) computing the inclinations of 2D planes with predefined reference planes and iii) computing the inclinations of a straight line with predefined reference planes. The development of the proposed “Knowledge Based System” was based on the “Principle of Color Gradation”.}, journal = {Journal of Computer Science}, publisher = {Science Publications} }