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Readded black-bar removal
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‎ScreenCapture.NET/Extensions/BlackBarDetection.cs‎

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namespace ScreenCapture.NET;
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/// <summary>
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/// Helper-class for black-bar removal.
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/// </summary>
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public static class BlackBarDetection
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{
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#region IImage
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/// <summary>
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/// Create an image with black bars removed
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/// </summary>
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/// <param name="image">The image the bars are removed from.</param>
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/// <param name="threshold">The threshold of "blackness" used to detect black bars. (e. g. Threshold 5 will consider a pixel of color [5,5,5] as black.)</param>
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/// <param name="removeTop">A bool indicating if black bars should be removed at the top of the image.</param>
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/// <param name="removeBottom">A bool indicating if black bars should be removed at the bottom of the image.</param>
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/// <param name="removeLeft">A bool indicating if black bars should be removed on the left side of the image.</param>
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/// <param name="removeRight">A bool indicating if black bars should be removed on the right side of the image.</param>
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/// <returns>The image with black bars removed.</returns>
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public static IImage RemoveBlackBars(this IImage image, int threshold = 0, bool removeTop = true, bool removeBottom = true, bool removeLeft = true, bool removeRight = true)
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{
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int top = removeTop ? CalculateTop(image, threshold) : 0;
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int bottom = removeBottom ? CalculateBottom(image, threshold) : image.Height;
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int left = removeLeft ? CalculateLeft(image, threshold) : 0;
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int right = removeRight ? CalculateRight(image, threshold) : image.Width;
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return image[left, top, right - left, bottom - top];
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}
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private static int CalculateTop(IImage image, int threshold)
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{
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IImage.IImageRows rows = image.Rows;
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for (int y = 0; y < rows.Count; y++)
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{
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IImage.IImageRow row = rows[y];
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foreach (IColor color in row)
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{
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if ((color.R > threshold) || (color.G > threshold) || (color.B > threshold))
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return y;
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}
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}
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return 0;
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}
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private static int CalculateBottom(IImage image, int threshold)
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{
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IImage.IImageRows rows = image.Rows;
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for (int y = rows.Count - 1; y >= 0; y--)
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{
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IImage.IImageRow row = rows[y];
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foreach (IColor color in row)
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{
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if ((color.R > threshold) || (color.G > threshold) || (color.B > threshold))
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return y;
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}
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}
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return rows.Count;
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}
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private static int CalculateLeft(IImage image, int threshold)
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{
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IImage.IImageColumns columns = image.Columns;
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for (int x = 0; x < columns.Count; x++)
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{
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IImage.IImageColumn column = columns[x];
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foreach (IColor color in column)
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{
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if ((color.R > threshold) || (color.G > threshold) || (color.B > threshold))
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return x;
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}
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}
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return 0;
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}
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private static int CalculateRight(IImage image, int threshold)
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{
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IImage.IImageColumns columns = image.Columns;
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for (int x = columns.Count - 1; x >= 0; x--)
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{
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IImage.IImageColumn column = columns[x];
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foreach (IColor color in column)
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{
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if ((color.R > threshold) || (color.G > threshold) || (color.B > threshold))
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return x;
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}
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}
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return columns.Count;
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}
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#endregion
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#region RefImage
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/// <summary>
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/// Create an image with black bars removed
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/// </summary>
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/// <param name="image">The image the bars are removed from.</param>
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/// <param name="threshold">The threshold of "blackness" used to detect black bars. (e. g. Threshold 5 will consider a pixel of color [5,5,5] as black.)</param>
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/// <param name="removeTop">A bool indicating if black bars should be removed at the top of the image.</param>
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/// <param name="removeBottom">A bool indicating if black bars should be removed at the bottom of the image.</param>
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/// <param name="removeLeft">A bool indicating if black bars should be removed on the left side of the image.</param>
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/// <param name="removeRight">A bool indicating if black bars should be removed on the right side of the image.</param>
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/// <returns>The image with black bars removed.</returns>
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public static RefImage<TColor> RemoveBlackBars<TColor>(this RefImage<TColor> image, int threshold = 0, bool removeTop = true, bool removeBottom = true, bool removeLeft = true, bool removeRight = true)
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where TColor : struct, IColor
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{
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int top = removeTop ? CalculateTop(image, threshold) : 0;
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int bottom = removeBottom ? CalculateBottom(image, threshold) : image.Height;
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int left = removeLeft ? CalculateLeft(image, threshold) : 0;
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int right = removeRight ? CalculateRight(image, threshold) : image.Width;
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return image[left, top, right - left, bottom - top];
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}
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private static int CalculateTop<TColor>(this RefImage<TColor> image, int threshold)
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where TColor : struct, IColor
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{
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RefImage<TColor>.ImageRows rows = image.Rows;
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for (int y = 0; y < rows.Count; y++)
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{
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ReadOnlyRefEnumerable<TColor> row = rows[y];
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foreach (TColor color in row)
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{
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if ((color.R > threshold) || (color.G > threshold) || (color.B > threshold))
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return y;
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}
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}
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return 0;
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}
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private static int CalculateBottom<TColor>(this RefImage<TColor> image, int threshold)
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where TColor : struct, IColor
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{
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RefImage<TColor>.ImageRows rows = image.Rows;
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for (int y = rows.Count - 1; y >= 0; y--)
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{
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ReadOnlyRefEnumerable<TColor> row = rows[y];
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foreach (TColor color in row)
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{
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if ((color.R > threshold) || (color.G > threshold) || (color.B > threshold))
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return y;
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}
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}
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return rows.Count;
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}
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private static int CalculateLeft<TColor>(this RefImage<TColor> image, int threshold)
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where TColor : struct, IColor
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{
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RefImage<TColor>.ImageColumns columns = image.Columns;
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for (int x = 0; x < columns.Count; x++)
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{
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ReadOnlyRefEnumerable<TColor> column = columns[x];
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foreach (TColor color in column)
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{
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if ((color.R > threshold) || (color.G > threshold) || (color.B > threshold))
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return x;
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}
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}
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return 0;
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}
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private static int CalculateRight<TColor>(this RefImage<TColor> image, int threshold)
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where TColor : struct, IColor
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{
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RefImage<TColor>.ImageColumns columns = image.Columns;
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for (int x = columns.Count - 1; x >= 0; x--)
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{
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ReadOnlyRefEnumerable<TColor> column = columns[x];
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foreach (TColor color in column)
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{
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if ((color.R > threshold) || (color.G > threshold) || (color.B > threshold))
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return x;
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}
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}
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return columns.Count;
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}
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#endregion
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}

‎ScreenCapture.NET/Model/BlackBarDetection.cs‎

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This file was deleted.

‎ScreenCapture.NET/ScreenCapture.NET.csproj.DotSettings‎

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<s:Boolean x:Key="/Default/CodeInspection/NamespaceProvider/NamespaceFoldersToSkip/=communitytoolkit_002Ehighperformance/@EntryIndexedValue">True</s:Boolean>
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<s:Boolean x:Key="/Default/CodeInspection/NamespaceProvider/NamespaceFoldersToSkip/=directx/@EntryIndexedValue">True</s:Boolean>
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<s:Boolean x:Key="/Default/CodeInspection/NamespaceProvider/NamespaceFoldersToSkip/=events/@EntryIndexedValue">True</s:Boolean>
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<s:Boolean x:Key="/Default/CodeInspection/NamespaceProvider/NamespaceFoldersToSkip/=extensions/@EntryIndexedValue">True</s:Boolean>
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<s:Boolean x:Key="/Default/CodeInspection/NamespaceProvider/NamespaceFoldersToSkip/=generic/@EntryIndexedValue">True</s:Boolean>
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<s:Boolean x:Key="/Default/CodeInspection/NamespaceProvider/NamespaceFoldersToSkip/=helper/@EntryIndexedValue">True</s:Boolean>
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<s:Boolean x:Key="/Default/CodeInspection/NamespaceProvider/NamespaceFoldersToSkip/=model/@EntryIndexedValue">True</s:Boolean>

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