# Multi-scale in Object detection?

I want to ask about MultiScale Object Detection. For the multiscale, if we have an original image do I need to zoom-in at different scales in the image at a particular point or zoom-out at different scales in the image at a particular point?

• imresize and downsample provide instanced in the large class of scale-space/multiscale techniques. Using the low-pass effect of larger kernels, you can indeed downsample the low-pass images, and obtain something akin to the Gaussian pyramid. YOu can find a description of the above in the survey paper A Panorama on Multiscale Geometric Representations – Laurent Duval Nov 18 '16 at 12:45