This map extract shows exact heights by a black dot with a number next to it. The number is the height above sea level in metres. The blue triangle represents a triangulation pillar; the networks of ...

After studying in and travelling through the metropolises of southern China, PhD student Zehua Pang observes the transformation of his hometown of Xuzhou, a medium-sized northern city that is ...

Will Kenton is an expert on the economy and investing laws and regulations. He previously held senior editorial roles at Investopedia and Kapitall Wire and holds a MA in Economics from The New School ...

Human and physical features are things that you can see all around you. Physical features like seas, mountains and rivers are natural. They would be here even if there were no people around. Human ...

What is a hermit crab? There are over 800 species of hermit crabs worldwide, and almost all are ocean dwellers—though people are likely most familiar with the dozen semi-terrestrial species, called ...

Abstract: Building roof contours are important geometric features of the building and play an important role in the fields of three-dimensional model reconstruction and target detection. Due to the ...

Abstract: The contours, one of the most significant human perceptual features, have a significant impact on point cloud processing. In urban scenes, contour extraction is quite challenging due to the ...

Sichuan Giant Panda Sanctuaries, home to more than 30% of the world's pandas which are classed as highly endangered, covers 924,500 ha with seven nature reserves and nine scenic parks in the Qionglai ...

Beau's lines are horizontal ridges across nails caused by interrupted nail growth. They can be linked to illnesses, injuries, or medications. Consult a healthcare provider to find the cause and ...

OpenCV built in functionalities does not contain subpixel edge extraction methods. This repo demostrates how to implement one. Some pixel precise edges extracted using the built-in cv::canny and ...