# histogram(binCount:) Calculates the histogram of a 32-bit-per-channel, 3-channel multiple-plane pixel buffer. ``` func histogram(binCount: Int) -> vImage.PixelBuffer.HistogramFFF ``` ## Parameters `binCount` The number of histogram entries for each channel. ## Return Value The histogram of the pixel buffer. ## See Also [`func specifyHistogram(vImage.PixelBuffer.HistogramFFF, destination: vImage.PixelBuffer)`](/documentation/Accelerate/vImage/PixelBuffer/specifyHistogram(_:destination:)-28844) Performs a histogram specification operation on a 32-bit-per-channel, 3-channel multiple-plane pixel buffer. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)