41.2: Judder‐Induced Edge Flicker in Moving Objects

Larimer, James; Gille, Jennifer; Wong, James

doi:10.1889/1.1831749

“…Because of these four properties of the visual system, the elliptical approximation to the window of visibility should grow and shrink depending on viewing conditions. 30 If the viewer is well-focused, and the stimulus is bright and high in contrast, the principal axes expand and the window incorporates a larger range of spatial and temporal frequencies. Larger windows allow more aliases to be seen, so flicker and motion artifacts become more noticeable.…”

Section: Human Sensitivitymentioning

confidence: 99%

“…where r is a rectangular pulse with width st c /2. The Fourier transform is 30 -Shutter functions, motion blur, and spatio-temporal aliases. Upper row: An object moving at speed s relative to the camera is captured with a box-filter shutter function as depicted in the upper left panel.…”

Section: 4mentioning

confidence: 99%

Temporal presentation protocols in stereoscopic displays: Flicker visibility, perceived motion, and perceived depth

Hoffman

¹

,

Karasev

²

,

Banks

³

2011

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Most stereoscopic displays rely on field-sequential presentation to present different images to the left and right eyes. With sequential presentation, images are delivered to each eye in alternation with dark intervals, and each eye receives its images in counter phase with the other eye. This type of presentation can exacerbate image artifacts including flicker, and the appearance of unsmooth motion. To address the flicker problem, some methods repeat images multiple times before updating to new ones. This greatly reduces flicker visibility, but makes motion appear less smooth. This paper describes an investigation of how different presentation methods affect the visibility of flicker, motion artifacts, and distortions in perceived depth. It begins with an examination of these methods in the spatio-temporal frequency domain. From this examination, it describes a series of predictions for how presentation rate, object speed, simultaneity of image delivery to the two eyes, and other properties ought to affect flicker, motion artifacts, and depth distortions, and reports a series of experiments that tested these predictions. The results confirmed essentially all of the predictions. The paper concludes with a summary and series of recommendations for the best approach to minimize these undesirable effects.

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“…Non-smooth motion (judder) [18] depends on the characteristics of the stimulus [19], and the type of the display used [20]. Edge flicker occurs during smooth pursuit eye movements on high-persistence displays [21].…”

Section: Related Workmentioning

confidence: 99%

The visibility of motion artifacts and their effect on motion quality

Mackin

¹

,

Noland²,

Bull

³

2016

2016 IEEE International Conference on Image Processing (ICIP)

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“…30 If the viewer is well-focused, and the stimulus is bright and high in contrast, the principal axes expand and the window incorporates a larger range of spatial and temporal frequencies. Larger windows allow more aliases to be seen, so flicker and motion artifacts become more noticeable.…”

Section: Human Sensitivitymentioning

confidence: 99%

Temporal presentation protocols in stereoscopic displays: Flicker visibility, perceived motion, and perceived depth

Hoffman¹,

Karasev²,

Banks³

2011

J. Soc. Inf. Display

View full text Add to dashboard Cite

Most stereoscopic displays rely on field-sequential presentation to present different images to the left and right eyes. With sequential presentation, images are delivered to each eye in alternation with dark intervals, and each eye receives its images in counter phase with the other eye. This type of presentation can exacerbate image artifacts including flicker, and the appearance of unsmooth motion. To address the flicker problem, some methods repeat images multiple times before updating to new ones. This greatly reduces flicker visibility, but makes motion appear less smooth. This paper describes an investigation of how different presentation methods affect the visibility of flicker, motion artifacts, and distortions in perceived depth. It begins with an examination of these methods in the spatio-temporal frequency domain. From this examination, it describes a series of predictions for how presentation rate, object speed, simultaneity of image delivery to the two eyes, and other properties ought to affect flicker, motion artifacts, and depth distortions, and reports a series of experiments that tested these predictions. The results confirmed essentially all of the predictions. The paper concludes with a summary and series of recommendations for the best approach to minimize these undesirable effects.

show abstract

41.2: Judder‐Induced Edge Flicker in Moving Objects

Cited by 17 publications

References 5 publications

Temporal presentation protocols in stereoscopic displays: Flicker visibility, perceived motion, and perceived depth

Temporal presentation protocols in stereoscopic displays: Flicker visibility, perceived motion, and perceived depth

The visibility of motion artifacts and their effect on motion quality

Temporal presentation protocols in stereoscopic displays: Flicker visibility, perceived motion, and perceived depth

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