Release 0.12.0

app/calibration.js

@@ -1,35 +1,81 @@
 /* Pure measurement processing; the video uses 32 clockwise edge patches. */
-function calibrationFit(baseline,patches,model){
- if(!model || baseline.length!==16 || patches.length!==32)throw new Error('Incomplete calibration measurements.');
- var candidates=[],edges=[0,0,0,0];
- for(var region=0;region<16;region++){
-  var responses=patches.map(function(p){if(!p || p.length!==16)throw new Error('Missing video measurements.');return Math.max(0,p[region]-baseline[region]);});
-  var peak=Math.max.apply(Math,responses),best=responses.indexOf(peak);
-  if(peak<8)continue;
-  // Reject regions responding equally around the screen (global histograms).
-  var strong=responses.filter(function(v){return v>=peak*.65;}).length;
-  if(strong>10)continue;
-  var distant=responses.some(function(v,i){var d=Math.min(Math.abs(i-best),32-Math.abs(i-best));return v>=peak*.65 && d>6;});
-  if(distant)continue;
-  var sum=0,weighted=0;
-  for(var offset=-3;offset<=3;offset++){
-   var index=(best+offset+32)%32,weight=Math.max(0,responses[index]-peak*.35);
-   weighted+=offset*weight;sum+=weight;
-  }
-  var position=((best+.5+weighted/sum)/8+4)%4;
-  candidates.push({position:position,region:region,score:peak/strong});
- }
- // Nested LG regions can measure the same edge position. Keep the most
- // localized response rather than making duplicate interpolation anchors.
- candidates.sort(function(a,b){return b.score-a.score || a.region-b.region;});
- var points=[];
- candidates.forEach(function(p){if(points.some(function(q){var d=Math.abs(p.position-q.position);return Math.min(d,4-d)<.06;}))return;points.push({position:p.position,region:p.region});edges[Math.floor(p.position)]++;});
- points.sort(function(a,b){return a.position-b.position;});
- if(points.length<4 || edges.some(function(n){return !n;}))throw new Error('No reliable spatial response on every edge. Keep the video full-screen; this TV may not expose local histogram regions. Your saved profile is unchanged.');
- return {model:model,points:points};
+function calibrationFit(baseline, patches, model) {
+    if (!model || baseline.length !== 16 || patches.length !== 32) throw new Error('Incomplete calibration measurements.');
+    var candidates = [],
+        edges = [0, 0, 0, 0];
+    for (var region = 0; region < 16; region++) {
+        var responses = patches.map(function(p) {
+            if (!p || p.length !== 16) throw new Error('Missing video measurements.');
+            return Math.max(0, p[region] - baseline[region]);
+        });
+        var peak = Math.max.apply(Math, responses),
+            best = responses.indexOf(peak);
+        if (peak < 8) continue;
+        // Reject regions responding equally around the screen (global histograms).
+        var strong = responses.filter(function(v) {
+            return v >= peak * .65;
+        }).length;
+        if (strong > 10) continue;
+        var distant = responses.some(function(v, i) {
+            var d = Math.min(Math.abs(i - best), 32 - Math.abs(i - best));
+            return v >= peak * .65 && d > 6;
+        });
+        if (distant) continue;
+        var sum = 0,
+            weighted = 0;
+        for (var offset = -3; offset <= 3; offset++) {
+            var index = (best + offset + 32) % 32,
+                weight = Math.max(0, responses[index] - peak * .35);
+            weighted += offset * weight;
+            sum += weight;
+        }
+        var position = ((best + .5 + weighted / sum) / 8 + 4) % 4;
+        candidates.push({
+            position: position,
+            region: region,
+            score: peak / strong
+        });
+    }
+    // Nested LG regions can measure the same edge position. Keep the most
+    // localized response rather than making duplicate interpolation anchors.
+    candidates.sort(function(a, b) {
+        return b.score - a.score || a.region - b.region;
+    });
+    var points = [];
+    candidates.forEach(function(p) {
+        if (points.some(function(q) {
+                var d = Math.abs(p.position - q.position);
+                return Math.min(d, 4 - d) < .06;
+            })) return;
+        points.push({
+            position: p.position,
+            region: p.region
+        });
+        edges[Math.floor(p.position)]++;
+    });
+    points.sort(function(a, b) {
+        return a.position - b.position;
+    });
+    if (points.length < 4 || edges.some(function(n) {
+            return !n;
+        })) throw new Error('No reliable spatial response on every edge. Keep the video full-screen; this TV may not expose local histogram regions. Your saved profile is unchanged.');
+    return {
+        model: model,
+        points: points
+    };
 }
-function calibrationLuma(regions){return regions.map(function(c){return (c[0]+c[1]+c[2])/3;});}
-function calibrationAverage(samples){
- if(samples.length<3)throw new Error('Not enough fresh histogram samples. Keep the app visible and repeat calibration.');
- return samples[0].map(function(_,r){return samples.reduce(function(sum,s){return sum+s[r];},0)/samples.length;});
+
+function calibrationLuma(regions) {
+    return regions.map(function(c) {
+        return (c[0] + c[1] + c[2]) / 3;
+    });
+}
+
+function calibrationAverage(samples) {
+    if (samples.length < 3) throw new Error('Not enough fresh histogram samples. Keep the app visible and repeat calibration.');
+    return samples[0].map(function(_, r) {
+        return samples.reduce(function(sum, s) {
+            return sum + s[r];
+        }, 0) / samples.length;
+    });
 }