Imaging device, imaging method, and imaging program

The present invention suppresses a memory region. An imaging device according to the present disclosure comprises: a sensor (11) for outputting first image data; a first processing unit (152) for performing processing of a first layer in a neural network having a hierarchical structure on the first image data in units of second image data having a smaller size than the whole of the first image data; and a second processing unit (153) for executing processing of a second layer in the neural network on a processing result output from the first processing unit. 本发明抑制存储器区域。根据本公开的成像装置包括：传感器(11)，用于输出第一图像数据；第一处理单元(152)，用于以尺寸小于第一图像数据的整体的第二图像数据为单位，对第一图像数据执行具有分层结构的神经网络中的第一层的处理；以及第二处理单元(153)，用于对从第一处理单元输出的处理结果执行神经网络中的第二层的处理。