GitHub is home to over 50 million developers working together to host and review code, manage projects, and build software together. If nothing happens, download GitHub Desktop and try again. If nothing happens, download Xcode and try again. If nothing happens, download the GitHub extension for Visual Studio and try again. This package contains an OCR engine - libtesseract and a command line program - tesseract. It also needs traineddata files which support the legacy engine, for example those from the tessdata repository. The lead developer is Ray Smith.
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In geometry , the tesseract is the four-dimensional analogue of the cube ; the tesseract is to the cube as the cube is to the square. Just as the surface of the cube consists of six square faces , the hypersurface of the tesseract consists of eight cubical cells. The tesseract is one of the six convex regular 4-polytopes. The tesseract is also called an eight-cell , C 8 , regular octachoron , octahedroid ,  cubic prism , and tetracube. The tesseract can be constructed in a number of ways. Since each vertex of a tesseract is adjacent to four edges, the vertex figure of the tesseract is a regular tetrahedron. That is, it consists of the points:. Each pair of non-parallel hyperplanes intersects to form 24 square faces in a tesseract.
The tesseract is the hypercube in , also called the 8-cell or octachoron. The figure above shows a projection of the tesseract in three-space Gardner The tesseract is composed of 8 cubes with 3 to an edge, and therefore has 16 vertices, 32 edges, 24 squares , and 8 cubes. It is one of the six regular polychora. The tesseract has distinct nets Gardner , Turney , Tougne , Buekenhout and Parker In Madeleine L'Engle's novel A Wrinkle in Time , the characters in the story travel through time and space using tesseracts. In the science fiction novel Factoring Humanity by Robert J. Sawyer, a tesseract is used by humans on Earth to enter the fourth dimension and contact another civilization on a planet orbiting the star Alpha Centauri A.
The Tesseract , also called the Cube , was a crystalline cube-shaped containment vessel for the Space Stone , one of the six Infinity Stones that predate the universe and possess unlimited energy. Following Schmidt's defeat at the hands of Captain America in , the Tesseract fell into Arctic waters, where it was recovered by Howard Stark. Spending decades attempting to harness its power, Stark eventually helped found Project P. Mar-Vell , an undercover Kree scientist, joined P. In , Yon-Rogg killed Lawson to obtain the Tesseract, but pilot Carol Danvers destroyed the engine, causing her to be doused in Tesseract energy. Six years later , Danvers, now Captain Marvel , recovered the Tesseract from Lawson's laboratory and renounced custody of it to S. It remained in their possession until , when it was stolen by Loki who used the Tesseract to open a wormhole and allow the Chitauri to invade New York City. After using the Tesseract to repair the Rainbow Bridge , Odin tasked Heimdall , the realm's gatekeeper, with the task of protecting the Tesseract.