A crowdsourcing-based subjective evaluation of viewport images, rendered with Pannini projection was conducted, aiming to assess the perceptual impact of the stretching distortion.

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In recent years, many unmanned retail stores have been introduced with the development
of computer vision, sensors and wireless technology. However, the trend has slowed due to the costs
associated with implementation. A vision-based kiosk, which is only equipped with a vision sensor, can
be a compact and affordable option. The vision-based kiosk detects a product via CNN-based object
detectors and performs instance-level classification by aggregating detections from multiple cameras.

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