ImageGrid/Viewer/css/filters.svg

<svg xmlns="http://www.w3.org/2000/svg" version="1.1" width="0%" height="0%" class="svg-filters">

	<!-- edge detect -->
	<filter id="EdgeDetect">
		<!--feConvolveMatrix order="3 3" preserveAlpha="true" divisor="1" bias="-1.4" kernelMatrix="-1 -1 -1 -1 9 -1 -1 -1 -1"/-->
		<feConvolveMatrix order="3 3" preserveAlpha="true" kernelMatrix="-1 -1 -1 -1 8 -1 -1 -1 -1"/>
	</filter>

	<!-- shadows and highlights 
	 	gradient map: [blue 0-5% black 93-96% white] 
		via: https://justcode.today/filters/ -->
	<filter id="ShadowsAndHilights">
		<fecolormatrix type="saturate" values="0" />
		<feComponentTransfer color-interpolation-filters="sRGB" result="cutoff">
			<feFuncR type="table" tableValues="0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0.33,0.67,1,1,1,1"/>
			<feFuncG type="table" tableValues="0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0.33,0.67,1,1,1,1"/>
			<feFuncB type="table" tableValues="1,0.8,0.6,0.4,0.2,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0.33,0.67,1,1,1,1"/>
		</feComponentTransfer>
		<feBlend mode="difference" in="SourceGraphic" in2="cutoff"/>
	</filter>

	<!-- gamma shadows -->
	<filter id="GammaShadows">
		<feComponentTransfer color-interpolation-filters="sRGB">
			<feFuncR type="gamma" exponent="0.3" amplitude="1.0" offset="0"></feFuncR>
			<feFuncG type="gamma" exponent="0.3" amplitude="1.0" offset="0"></feFuncG>
			<feFuncB type="gamma" exponent="0.3" amplitude="1.0" offset="0"></feFuncB>
		</feComponentTransfer>
	</filter>

</svg>
<!-- vim:set sw=4 ts=4 : -->