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Reference.org
Wavelet transform
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<p>In <a href="/facts/Mathematics/pxTouaz4">mathematics</a>, a wavelet series is a representation of a <a href="/facts/Square-integrable/IASblcJJ">square-integrable</a> (<a href="/facts/Real_number/R02gw5Pb">real</a>- or <a href="/facts/Complex_number/2w7mqI7e">complex</a>-valued) <a href="/facts/Function_(mathematics)/CdReEKCh">function</a> by a certain <a href="/facts/Orthonormal/JfgL1nAh">orthonormal</a> <a href="/facts/Series_(mathematics)/yDnlsgIe">series</a> generated by a <a href="/facts/Wavelet/3XcX4uIP">wavelet</a>. This article provides a formal, mathematical definition of an orthonormal wavelet and of the integral wavelet transform. </p>