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Computer Graphics

Számítógépes grafika
A tantárgyleírás hatályossága
Hatályosság kezdete:
2026. March 21.
Hatályosság vége:
Subject name (Hungarian, English)
Számítógépes grafika
Computer Graphics
Subject code BMEVIIIAB12
Subject type
Training Level
Course types and hours (weekly/semester)
Course type lecture tutorial laboratory
hours (weekly) 3 0 1
type (linked/independent) derived course
Assessment type vizsga
Credits 5
Subject coordinator
DR. Szirmay-Kalos László
position: egyetemi tanár
Responsible department
Irányítástechnika és Informatika Tanszék
Faculty Villamosmérnöki és Informatikai Kar
Subject website https://cg.iit.bme.hu/portal/en/cgbme
Primary curriculum type
Direct prerequisites – Strong prerequisite none
Direct prerequisites – Weak prerequisite none
Direct prerequisites – Parallel prerequisite none
Direct prerequisites – Milestone prerequisite none
Direct prerequisites – Exclusion none

Objectives

Programme

1. Analytic geometry overview and review. Construction of geometries, the main characteristics of various important geometries. Analytical geometry of Euclidean space: point, vector, coordinate systems. Meaning and implementation of vector operations in C++. Combination of points: parametric equations of a segment, line and circle. Distance: plane, sphere implicit equation. Algebras: vector, matrix, complex number, Clifford algebra.

2. Geometric modeling. Classic curves: implicit, parametric and explicit forms. Freeform curves with a combination of points. Lagrangian interpolation. Hermite interpolation to two points. Bezier approximation. Catmull-Rom spline. Parametric surfaces. Surface with extraction and rotation. Catmull-Clark split curve and surface.

3. Geometric transformations: Elementary transformations and their matrix formalism. Homogeneous coordinates. Projective geometry (ideal point, relation between Cartesian and homogeneous coordinates). Homogeneous linear transformations and their properties. Shift, scale, rotate (Rodriguez formula).

4.  2D image synthesis: Vectorization of curves. Dividing polygons into triangles. Modeling transformation. View transformation. Cutting sections and areas. Section drawing. Area filling.

5.  GLUT/OpenGL 3 and 4/GLSL: Syntax, connection with the windowing system. Open window, register event handler functions. Vertex array object and vertex buffer object. The GPU pipeline for 2D graphics. GLSL shaders. Implementation of "Hello triangle" in OpenGL/GLSL environment.

6.  Basic optical model of 3D image synthesis: Beam density. BRDF. Optically smooth materials, law of reflection and refraction of geometrical optics, Fresnel equations. Wrinkled surfaces, diffuse and shimmering surface. Direction and point light source. Concept of colors, color matching.

7.  Ray tracing: Solving the visibility problem, normal vector of surfaces, shadow calculation. Recursive ray tracing: reflection and refraction.

8.  Incremental 3D image synthesis. Tessellation of surfaces. Modeling transformation. View transformation in the case of perspective projection. Cutting in homogeneous coordinates. Masking problem in screen coordinate system, z-buffer algorithm. Gouraud and Phong shading. Texture mapping. 3D graphics application of OpenGL and graphics hardware. Texture rendering, filtering. GPU programming.

 9. Computer games: Construction of virtual reality systems and games. The avatar. Game engine. Posters, particle systems. The physics of games. Field modeling. Movement of characters.

The subject presents the algorithms for the production and processing of image information, introducing students to the development of interactive graphics applications and the programming of graphics hardware.

Learning outcomes

Ez a tantárgy a KKK rendeletben meghatározott, következő kompetenciák fejlesztését szolgálja:

Knowledge

No learning outcomes recorded.

Skills

No learning outcomes recorded.

Attitudes

No learning outcomes recorded.

Autonomy and responsibility

No learning outcomes recorded.

Oktatási módszertan

The subject is application-oriented, i.e. the program-level implementation of the theory and algorithms presented in the lectures is also discussed, which the students themselves practice during the laboratory classes. As an implementation environment, we use the C++ language, the version of the OpenGL library (over version 3.3), and the GLSL shader language.

Tanulástámogató anyagok

Not provided.

Recommended preliminary knowledge for completing the subject

Knowledge type competencies
(azon előzetes ismeretek összessége, amelyek megléte nem kötelező, de a tantárgy eredményes teljesítését nagyban elősegíti)
The C++ programming language, Event-driven programming, Introduction to computational theory (vector operations, linear algebra), Analysis (derivation of one- and two-variable vector functions), Physics (center of gravity, dynamics, geometric optics).
Skill type competencies
(azon előzetes képességek és készségek összessége, amelyek megléte nem kötelező, de a tantárgy eredményes teljesítését nagyban elősegíti)
nincs
Recommended (non-compulsory) preliminary competencies
(azon ajánlott (nem kötelező) előzetesen megszerzendő kompetenciák összessége, amelyek jelentősen hozzájárulnak a tantárgy eredményes teljesítéséhez)
The C++ programming language, Event-driven programming, Introduction to computational theory (vector operations, linear algebra), Analysis (derivation of one- and two-variable vector functions), Physics (center of gravity, dynamics, geometric optics).
General rules
Requirements: The mid-term test and the final exam contribute to the final mark with 25% and 75%, respectively. In the mid-term test, at least 40% of the points need to be gathered to make it successful. A successful mid-term test is necessary to sit for a final exam in the examination term. Additional possibilities: An unsuccessful mid-term test can be retaken once.
Assessment methods
In-term assessments

No detailed assessments provided.

Weight of in-term assessments

No weights provided.

Exam-period assessments

No detailed assessments provided.

Weight of exam elements

No weights provided.

Grade calculation

No grade thresholds provided.

Attendance requirements

No attendance requirements provided.

Rules for retake and resubmission

Not provided.

Short description

Not provided.

Detailed description

Not provided.

Recommended courses

Not provided.

Workload to complete the subject

No workload breakdown provided.

Validity of subject requirements
Requirements valid from:
Requirements valid until:
Curriculum placement

No curriculum placements recorded for this subject version.