switched to flir's iron palette (bcb62aa3) · Commits · Elphel / elphel-web-393

src/jp4-canvas/jquery-jp4.js

+145 −5

Original line number	Diff line number	Diff line
		@@ -70,6 +70,74 @@

		var PIXELS = [];

		// https://stackoverflow.com/questions/28495390/thermal-imaging-palette
		var iron_palette = ["#00000a","#000014","#00001e","#000025","#00002a","#00002e","#000032","#000036",
		"#00003a","#00003e","#000042","#000046","#00004a","#00004f","#000052","#010055",
		"#010057","#020059","#02005c","#03005e","#040061","#040063","#050065","#060067",
		"#070069","#08006b","#09006e","#0a0070","#0b0073","#0c0074","#0d0075","#0d0076",
		"#0e0077","#100078","#120079","#13007b","#15007c","#17007d","#19007e","#1b0080",
		"#1c0081","#1e0083","#200084","#220085","#240086","#260087","#280089","#2a0089",
		"#2c008a","#2e008b","#30008c","#32008d","#34008e","#36008e","#38008f","#390090",
		"#3b0091","#3c0092","#3e0093","#3f0093","#410094","#420095","#440095","#450096",
		"#470096","#490096","#4a0096","#4c0097","#4e0097","#4f0097","#510097","#520098",
		"#540098","#560098","#580099","#5a0099","#5c0099","#5d009a","#5f009a","#61009b",
		"#63009b","#64009b","#66009b","#68009b","#6a009b","#6c009c","#6d009c","#6f009c",
		"#70009c","#71009d","#73009d","#75009d","#77009d","#78009d","#7a009d","#7c009d",
		"#7e009d","#7f009d","#81009d","#83009d","#84009d","#86009d","#87009d","#89009d",
		"#8a009d","#8b009d","#8d009d","#8f009c","#91009c","#93009c","#95009c","#96009b",
		"#98009b","#99009b","#9b009b","#9c009b","#9d009b","#9f009b","#a0009b","#a2009b",
		"#a3009b","#a4009b","#a6009a","#a7009a","#a8009a","#a90099","#aa0099","#ab0099",
		"#ad0099","#ae0198","#af0198","#b00198","#b00198","#b10197","#b20197","#b30196",
		"#b40296","#b50295","#b60295","#b70395","#b80395","#b90495","#ba0495","#ba0494",
		"#bb0593","#bc0593","#bd0593","#be0692","#bf0692","#bf0692","#c00791","#c00791",
		"#c10890","#c10990","#c20a8f","#c30a8e","#c30b8e","#c40c8d","#c50c8c","#c60d8b",
		"#c60e8a","#c70f89","#c81088","#c91187","#ca1286","#ca1385","#cb1385","#cb1484",
		"#cc1582","#cd1681","#ce1780","#ce187e","#cf187c","#cf197b","#d01a79","#d11b78",
		"#d11c76","#d21c75","#d21d74","#d31e72","#d32071","#d4216f","#d4226e","#d5236b",
		"#d52469","#d62567","#d72665","#d82764","#d82862","#d92a60","#da2b5e","#da2c5c",
		"#db2e5a","#db2f57","#dc2f54","#dd3051","#dd314e","#de324a","#de3347","#df3444",
		"#df3541","#df363d","#e0373a","#e03837","#e03933","#e13a30","#e23b2d","#e23c2a",
		"#e33d26","#e33e23","#e43f20","#e4411d","#e4421c","#e5431b","#e54419","#e54518",
		"#e64616","#e74715","#e74814","#e74913","#e84a12","#e84c10","#e84c0f","#e94d0e",
		"#e94d0d","#ea4e0c","#ea4f0c","#eb500b","#eb510a","#eb520a","#eb5309","#ec5409",
		"#ec5608","#ec5708","#ec5808","#ed5907","#ed5a07","#ed5b06","#ee5c06","#ee5c05",
		"#ee5d05","#ee5e05","#ef5f04","#ef6004","#ef6104","#ef6204","#f06303","#f06403",
		"#f06503","#f16603","#f16603","#f16703","#f16803","#f16902","#f16a02","#f16b02",
		"#f16b02","#f26c01","#f26d01","#f26e01","#f36f01","#f37001","#f37101","#f37201",
		"#f47300","#f47400","#f47500","#f47600","#f47700","#f47800","#f47a00","#f57b00",
		"#f57c00","#f57e00","#f57f00","#f68000","#f68100","#f68200","#f78300","#f78400",
		"#f78500","#f78600","#f88700","#f88800","#f88800","#f88900","#f88a00","#f88b00",
		"#f88c00","#f98d00","#f98d00","#f98e00","#f98f00","#f99000","#f99100","#f99200",
		"#f99300","#fa9400","#fa9500","#fa9600","#fb9800","#fb9900","#fb9a00","#fb9c00",
		"#fc9d00","#fc9f00","#fca000","#fca100","#fda200","#fda300","#fda400","#fda600",
		"#fda700","#fda800","#fdaa00","#fdab00","#fdac00","#fdad00","#fdae00","#feaf00",
		"#feb000","#feb100","#feb200","#feb300","#feb400","#feb500","#feb600","#feb800",
		"#feb900","#feb900","#feba00","#febb00","#febc00","#febd00","#febe00","#fec000",
		"#fec100","#fec200","#fec300","#fec400","#fec500","#fec600","#fec700","#fec800",
		"#fec901","#feca01","#feca01","#fecb01","#fecc02","#fecd02","#fece03","#fecf04",
		"#fecf04","#fed005","#fed106","#fed308","#fed409","#fed50a","#fed60a","#fed70b",
		"#fed80c","#fed90d","#ffda0e","#ffda0e","#ffdb10","#ffdc12","#ffdc14","#ffdd16",
		"#ffde19","#ffde1b","#ffdf1e","#ffe020","#ffe122","#ffe224","#ffe226","#ffe328",
		"#ffe42b","#ffe42e","#ffe531","#ffe635","#ffe638","#ffe73c","#ffe83f","#ffe943",
		"#ffea46","#ffeb49","#ffeb4d","#ffec50","#ffed54","#ffee57","#ffee5b","#ffee5f",
		"#ffef63","#ffef67","#fff06a","#fff06e","#fff172","#fff177","#fff17b","#fff280",
		"#fff285","#fff28a","#fff38e","#fff492","#fff496","#fff49a","#fff59e","#fff5a2",
		"#fff5a6","#fff6aa","#fff6af","#fff7b3","#fff7b6","#fff8ba","#fff8bd","#fff8c1",
		"#fff8c4","#fff9c7","#fff9ca","#fff9cd","#fffad1","#fffad4","#fffbd8","#fffcdb",
		"#fffcdf","#fffde2","#fffde5","#fffde8","#fffeeb","#fffeee","#fffef1","#fffef4",
		"#fffff6"];

		function get_palette_color(v){

		v = v*(iron_palette.length-1);
		v_lo = Math.floor(v);
		//v_hi = Math.ceil(v);

		// don't interpolate

		return iron_palette[v_lo];
		}

		// only valid values are allowed otherwise - disable
		if ((settings.lowres!=0)&&(settings.lowres!=1)&&(settings.lowres!=2)&&(settings.lowres!=4)&&(settings.lowres!=8)){
		settings.lowres = 0;
		@@ -223,16 +291,88 @@

		// convert to C
		rgba_16bit = rgba_16bit.map(x => x/100-273.15);
		// scale
		t_lo = 10;
		t_hi = 30;

		// display based on histogram
		function get_t_lo(a,p=0.05,bins=1024){

		let min = Math.min(...a);
		let max = Math.max(...a);
		let bin_height = (max-min)/bins;


		for(let i=0;i<bins;i++){
		let bin_lo = min + (i+0)*bin_height;
		let bin_hi = min + (i+1)*bin_height;
		let a_f = a.filter(x => x<bin_hi);
		if(a_f.length>=p*a.length){
		return (bin_lo+bin_hi)/2;
		}
		}
		return 0;

		}

		// display based on histogram
		function get_t_hi(a,p=0.01,bins=1024){

		let min = Math.min(...a);
		let max = Math.max(...a);
		let bin_height = (max-min)/bins;

		for(let i=0;i<bins;i++){
		let bin_lo = max - (i+1)*bin_height;
		let bin_hi = max - (i+0)*bin_height;
		let a_f = a.filter(x => x>bin_lo);
		if(a_f.length>=p*a.length){
		return (bin_lo+bin_hi)/2;
		}
		}
		return 0;

		}

		// scale - 0.0-1.0
		t_lo = get_t_lo(rgba_16bit);
		t_hi = get_t_hi(rgba_16bit);

		t_lo = t_lo.toFixed(2);
		t_hi = t_hi.toFixed(2);

		//console.log(t_lo+" "+t_hi);

		rgba_16bit = rgba_16bit.map(x => (x-t_lo)/(t_hi-t_lo));
		rgba_16bit = rgba_16bit.map(x => 255xx);

		// get index
		//rgba_16bit = rgba_16bit.map(x => iron_palette[Math.round(x*(iron_palette.length-1))]);

		// this is for linear black n white
		//rgba_16bit = rgba_16bit.map(x => 255xx);

		}

		var rgba_clamped = new Uint8ClampedArray(rgba_16bit.length*4);
		rgba_clamped = rgba_clamped.map((x,i) => rgba_16bit[(i-i%4)/4]);
		//rgba_clamped = rgba_clamped.map((x,i) => rgba_16bit[(i-i%4)/4]);
		rgba_clamped = rgba_clamped.map((x,i) => {

		let v = rgba_16bit[(i-i%4)/4];
		v = (v>1)?1:v;
		v = (v<0)?0:v;
		v = get_palette_color(v);

		if (i%4==0){
		v = v.slice(1,3);
		}else if (i%4==1){
		v = v.slice(3,5);
		}else if (i%4==2){
		v = v.slice(5,7);
		}else{
		return 255;
		}

		v = parseInt(v,16);
		return v;
		});

		rgba_clamped = rgba_clamped.map((x,i) => (i%4==3)?255:x);

		var rgba_idata = new ImageData(rgba_clamped,ifds[0].width,ifds[0].height);

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