Which of the following technologies belong to the application of image segmentation?

The LDA algorithm assumes that the prior distribution of topics in documents and the prior distribution of words in topics follow the Dirichlet distribution.

Which of the following options does not belong to the three levels of natural language processing technology?

The image filter operation is also called template operation. Common template operations include template convolution and template row.

The background difference method is to use the current post in the image sequence and the background reference model for subtraction, which can realize the detection of moving objects in the image.