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Line integral convolution
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<p>In <a href="/facts/Scientific_visualization/p0yPc1X5">scientific visualization</a>, line integral convolution (LIC) is a method to visualize a <a href="/facts/Vector_field/ccFNuPPp">vector field</a> (such as <a href="/facts/Fluid_motion/y7uzSCfg">fluid motion</a>) at high spatial resolutions. The LIC technique was first proposed by Brian Cabral and Leith Casey Leedom in 1993. </p><p>In LIC, discrete numerical <a href="/facts/Line_integral/10s4B3Nn">line integration</a> is performed along the <a href="/facts/Field_line/Nxr20d47">field lines</a> (curves) of the vector field on a <a href="/facts/Regular_grid/8vDdL4UB">uniform grid</a>. The integral operation is a <a href="/facts/Convolution/PVPrdz9J">convolution</a> of a filter <a href="/facts/Kernel_(image_processing)/mKV4r1Gv">kernel</a> and an input texture, often <a href="/facts/White_noise/wJ0SR21n">white noise</a>. In <a href="/facts/Signal_processing/Npaja6zb">signal processing</a>, this process is known as a <a href="/facts/Convolution/PVPrdz9J">discrete convolution</a>. </p>