code: boolean aboutEquals(float moduleSize, float i, float j) {
      if (Math.abs(i - getY()) <= moduleSize && Math.abs(j - getX()) <= moduleSize) {
        float moduleSizeDiff = Math.abs(moduleSize - estimatedModuleSize);
        return moduleSizeDiff <= 1.0f || moduleSizeDiff <= estimatedModuleSize;
      }
      return false;
    }
docs: <p>Determines if this finder pattern "about equals" a finder pattern at the stated
  position and size -- meaning, it is at nearly the same center with nearly the same size.</p>