Allow epsilon of 1F for existing LUT converter

Author: tkp1n

tests/ImageSharp.Tests/Formats/Jpg/RgbToYCbCrConverterTests.cs

@@ -15,9 +15,6 @@ namespace SixLabors.ImageSharp.Tests.Formats.Jpg
 {
     public class RgbToYCbCrConverterTests
     {
-        private const float Epsilon = .5F;
-        private static readonly ApproximateColorSpaceComparer Comparer = new ApproximateColorSpaceComparer(Epsilon);
-
         public RgbToYCbCrConverterTests(ITestOutputHelper output)
         {
             this.Output = output;
@@ -37,7 +34,7 @@ public void TestLutConverter()
 
             target.Convert(data.AsSpan(), ref y, ref cb, ref cr);
 
-            Verify(data, ref y, ref cb, ref cr);
+            Verify(data, ref y, ref cb, ref cr, new ApproximateColorSpaceComparer(1F));
         }
 
         [Fact]
@@ -61,10 +58,10 @@ public void TestVectorizedConverter()
 
             RgbToYCbCrConverterVectorized.Convert(data.AsSpan(), ref y, ref cb, ref cr);
 
-            Verify(dataCopy, ref y, ref cb, ref cr);
+            Verify(dataCopy, ref y, ref cb, ref cr, new ApproximateColorSpaceComparer(0.0001F));
         }
 
-        private static void Verify(ReadOnlySpan<Rgb24> data, ref Block8x8F yResult, ref Block8x8F cbResult, ref Block8x8F crResult)
+        private static void Verify(ReadOnlySpan<Rgb24> data, ref Block8x8F yResult, ref Block8x8F cbResult, ref Block8x8F crResult, ApproximateColorSpaceComparer comparer)
         {
             for (int i = 0; i < data.Length; i++)
             {
@@ -76,7 +73,7 @@ private static void Verify(ReadOnlySpan<Rgb24> data, ref Block8x8F yResult, ref
                 float cb = 128F + ((-0.168736F * r) - (0.331264F * g) + (0.5F * b));
                 float cr = 128F + ((0.5F * r) - (0.418688F * g) - (0.081312F * b));
 
-                Assert.Equal(new YCbCr(y, cb, cr), new YCbCr(yResult[i], cbResult[i], crResult[i]), Comparer);
+                Assert.Equal(new YCbCr(y, cb, cr), new YCbCr(yResult[i], cbResult[i], crResult[i]), comparer);
             }
         }