With regard to image recognition, people have been found to recognize a specific image in an unbroken series of different images, each of which lasts as little as 13 milliseconds. However, when the modulated light is non-uniform and contains an image, the flicker fusion threshold can be much higher, in the hundreds of hertz. This perception of modulated light as steady is known as the flicker fusion threshold. Modulated light (such as a computer display) is perceived as stable by the majority of participants in studies when the rate is higher than 50 Hz. The human visual system can process 10 to 12 images per second and perceive them individually, while higher rates are perceived as motion. The temporal sensitivity and resolution of human vision varies depending on the type and characteristics of visual stimulus, and it differs between individuals. In electronic camera specifications frame rate refers to the maximum possible rate frames could be captured, but in practice, other settings (such as exposure time) may reduce the actual frequency to a lower number than the frame rate. Additionally, in the context of computer graphics performance, FPS is the rate at which a system, particularly a GPU, is able to generate frames, and refresh rate is the frequency at which a display shows completed frames. In these contexts, frame rate may be used interchangeably with frame frequency and refresh rate, which are expressed in hertz. This definition applies to film and video cameras, computer animation, and motion capture systems.
JSTOR ( June 2023) ( Learn how and when to remove this template message)įrame rate (expressed in frames per second or FPS) is typically the frequency (rate) at which consecutive images ( frames) are captured or displayed.Unsourced material may be challenged and removed.
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