Prerequisites
Description
When applying an adaptive histogram equalisation to a 21,969 x 9802px image, I receive the following:
Unhandled Exception: System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
at SixLabors.ImageSharp.Processing.Processors.Normalization.AdaptiveHistogramEqualizationProcessor`1.CdfTileData.RowIntervalOperation.Invoke(RowInterval& rows)
at SixLabors.ImageSharp.Advanced.ParallelRowIterator.RowIntervalOperationWrapper`1.Invoke(Int32 i)
at System.Threading.Tasks.Parallel.<>c__DisplayClass17_0`1.<ForWorker>b__1()
at System.Threading.Tasks.Task.InnerInvokeWithArg(Task childTask)
at System.Threading.Tasks.Task.<>c__DisplayClass176_0.<ExecuteSelfReplicating>b__0(Object <p0>)
at System.Threading.Tasks.Task.Execute()
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.Tasks.Task.ExecuteWithThreadLocal(Task& currentTaskSlot)
at System.Threading.Tasks.Task.ExecuteEntry(Boolean bPreventDoubleExecution)
at System.Threading.ThreadPoolWorkQueue.Dispatch()
Steps to Reproduce
This can be easily replicated using the following code, which fails fast:
using var image = new Image<Rgba32>(20000, 10000);
image.Mutate(c => c.HistogramEqualization(new HistogramEqualizationOptions
{
Method = HistogramEqualizationMethod.AdaptiveTileInterpolation,
ClipHistogram = true
}));I haven't looked at the code at all, but given the speed at which this fails compared with the length of time it takes to equalise a 10,000px square image, I am assuming this crash happens early in the process during memory allocation.
(Apologies for attempting to process gigantic images)
System Configuration
- ImageSharp version: 1.0.2
- Other ImageSharp packages and versions:
- Environment (Operating system, version and so on): Windows 10
- .NET Framework version: .NET Core 5.0
Prerequisites
DEBUGandRELEASEmodeDescription
When applying an adaptive histogram equalisation to a 21,969 x 9802px image, I receive the following:
Steps to Reproduce
This can be easily replicated using the following code, which fails fast:
I haven't looked at the code at all, but given the speed at which this fails compared with the length of time it takes to equalise a 10,000px square image, I am assuming this crash happens early in the process during memory allocation.
(Apologies for attempting to process gigantic images)
System Configuration