Portal de Periódicos da CAPES

<title>Using OpenGL for imaging</title>

1996; SPIE; Linguagem: Inglês

10.1117/12.238478

1996-756X

Randi J. Rost,

Computer Graphics and Visualization Techniques

Although OpenGL is not usually thought of as a library for imaging, it was designed to expose the capabilities of modern frame buffer hardware. The emphasis in OpenGL is on 3D graphics (i.e., geometry), but OpenGL also includes a fairly rich set of capabilities for 2D imaging. This paper describes the capabilities of OpenGL for imaging applications, including pixel transfer operations (draw, read, copy); color lookup tables; linear transformation of color values; pixel conversion capabilities; and pixel operations such as blending, masking, and clipping. Several recently proposed extensions to OpenGL add significant capabilities to the core imaging model, including convolution, window level mapping, and image transformation and resampling. These capabilities are discussed in the context of the pixel processing pipeline defined by OpenGL.