mean_nmean_nMeanNMeanNmean_n (算子名称)

名称

mean_nmean_nMeanNMeanNmean_n — Average gray values over several channels.

参数签名

描述

The operator mean_nmean_nMeanNMeanNMeanNmean_n generates the pixel-by-pixel mean value of all channels . For each coordinate point the sum of all gray values at this coordinate is calculated. The result is the mean of the gray values (sum divided by the number of channels). The output image has one channel.

For an explanation of the concept of smoothing filters see the introduction of chapter Filters / Smoothing.

注意

Note that filter operators may return unexpected results if an image with a reduced domain is used as input. Please refer to the chapter 过滤器.

运行信息

• Multithreading type: reentrant (runs in parallel with non-exclusive operators).
• Multithreading scope: global (may be called from any thread).
• Automatically parallelized on tuple level.
• Automatically parallelized on domain level.

参数表

例程 (C)

compose3(Channel1,Channel2,Channel3,&MultiChannel);
mean_n(MultiChannel,&Mean);

可能的前置算子

compose2compose2Compose2Compose2Compose2compose2, compose3compose3Compose3Compose3Compose3compose3, compose4compose4Compose4Compose4Compose4compose4, compose5compose5Compose5Compose5Compose5compose5, add_channelsadd_channelsAddChannelsAddChannelsAddChannelsadd_channels

可替代算子

rank_nrank_nRankNRankNRankNrank_n

参考其它

count_channelscount_channelsCountChannelsCountChannelsCountChannelscount_channels, mean_imagemean_imageMeanImageMeanImageMeanImagemean_image

模块

Foundation