feat(News): refactor news service and add sentiment tracking

2026-08-09 21:01:41 +02:00
parent 605e41cfeb
commit aff831cf58
390 changed files with 115094 additions and 9 deletions
@@ -0,0 +1,108 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.compare = compare;
+var _colorUtils = require("./colorUtils");
+var _imageChannel = require("./imageChannel");
+var _stats = require("./stats");
+/**
+ * Copyright (c) Microsoft Corporation.
+ *
+ * Licensed under the Apache License, Version 2.0 (the 'License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+const SSIM_WINDOW_RADIUS = 15;
+const VARIANCE_WINDOW_RADIUS = 1;
+function drawPixel(width, data, x, y, r, g, b) {
+  const idx = (y * width + x) * 4;
+  data[idx + 0] = r;
+  data[idx + 1] = g;
+  data[idx + 2] = b;
+  data[idx + 3] = 255;
+}
+function compare(actual, expected, diff, width, height, options = {}) {
+  const {
+    maxColorDeltaE94 = 1.0
+  } = options;
+  const paddingSize = Math.max(VARIANCE_WINDOW_RADIUS, SSIM_WINDOW_RADIUS);
+  const paddingColorEven = [255, 0, 255];
+  const paddingColorOdd = [0, 255, 0];
+  const [r1, g1, b1] = _imageChannel.ImageChannel.intoRGB(width, height, expected, {
+    paddingSize,
+    paddingColorEven,
+    paddingColorOdd
+  });
+  const [r2, g2, b2] = _imageChannel.ImageChannel.intoRGB(width, height, actual, {
+    paddingSize,
+    paddingColorEven,
+    paddingColorOdd
+  });
+  const noop = (x, y) => {};
+  const drawRedPixel = diff ? (x, y) => drawPixel(width, diff, x - paddingSize, y - paddingSize, 255, 0, 0) : noop;
+  const drawYellowPixel = diff ? (x, y) => drawPixel(width, diff, x - paddingSize, y - paddingSize, 255, 255, 0) : noop;
+  const drawGrayPixel = diff ? (x, y) => {
+    const gray = (0, _colorUtils.rgb2gray)(r1.get(x, y), g1.get(x, y), b1.get(x, y));
+    const value = (0, _colorUtils.blendWithWhite)(gray, 0.1);
+    drawPixel(width, diff, x - paddingSize, y - paddingSize, value, value, value);
+  } : noop;
+  let fastR, fastG, fastB;
+  let diffCount = 0;
+  for (let y = paddingSize; y < r1.height - paddingSize; ++y) {
+    for (let x = paddingSize; x < r1.width - paddingSize; ++x) {
+      // Fast-path: equal pixels.
+      if (r1.get(x, y) === r2.get(x, y) && g1.get(x, y) === g2.get(x, y) && b1.get(x, y) === b2.get(x, y)) {
+        drawGrayPixel(x, y);
+        continue;
+      }
+
+      // Compare pixel colors using the dE94 color difference formulae.
+      // The dE94 is normalized so that the value of 1.0 is the "just-noticeable-difference".
+      // Color difference below 1.0 is not noticeable to a human eye, so we can disregard it.
+      // See https://en.wikipedia.org/wiki/Color_difference
+      const delta = (0, _colorUtils.colorDeltaE94)([r1.get(x, y), g1.get(x, y), b1.get(x, y)], [r2.get(x, y), g2.get(x, y), b2.get(x, y)]);
+      if (delta <= maxColorDeltaE94) {
+        drawGrayPixel(x, y);
+        continue;
+      }
+      if (!fastR || !fastG || !fastB) {
+        fastR = new _stats.FastStats(r1, r2);
+        fastG = new _stats.FastStats(g1, g2);
+        fastB = new _stats.FastStats(b1, b2);
+      }
+      const [varX1, varY1] = r1.boundXY(x - VARIANCE_WINDOW_RADIUS, y - VARIANCE_WINDOW_RADIUS);
+      const [varX2, varY2] = r1.boundXY(x + VARIANCE_WINDOW_RADIUS, y + VARIANCE_WINDOW_RADIUS);
+      const var1 = fastR.varianceC1(varX1, varY1, varX2, varY2) + fastG.varianceC1(varX1, varY1, varX2, varY2) + fastB.varianceC1(varX1, varY1, varX2, varY2);
+      const var2 = fastR.varianceC2(varX1, varY1, varX2, varY2) + fastG.varianceC2(varX1, varY1, varX2, varY2) + fastB.varianceC2(varX1, varY1, varX2, varY2);
+      // if this pixel is a part of a flood fill of a 3x3 square of either of the images, then it cannot be
+      // anti-aliasing pixel so it must be a pixel difference.
+      if (var1 === 0 || var2 === 0) {
+        drawRedPixel(x, y);
+        ++diffCount;
+        continue;
+      }
+      const [ssimX1, ssimY1] = r1.boundXY(x - SSIM_WINDOW_RADIUS, y - SSIM_WINDOW_RADIUS);
+      const [ssimX2, ssimY2] = r1.boundXY(x + SSIM_WINDOW_RADIUS, y + SSIM_WINDOW_RADIUS);
+      const ssimRGB = ((0, _stats.ssim)(fastR, ssimX1, ssimY1, ssimX2, ssimY2) + (0, _stats.ssim)(fastG, ssimX1, ssimY1, ssimX2, ssimY2) + (0, _stats.ssim)(fastB, ssimX1, ssimY1, ssimX2, ssimY2)) / 3.0;
+      const isAntialiased = ssimRGB >= 0.99;
+      if (isAntialiased) {
+        drawYellowPixel(x, y);
+      } else {
+        drawRedPixel(x, y);
+        ++diffCount;
+      }
+    }
+  }
+  return diffCount;
+}