Defocus from Pupil-plane Image Size
Estimation of Defocus Blur from a Single Image for High Quality Image Processing
... objectionable image blur and damage ...shake from blurred ...the image and also negligible in-plane camera ...blur from the camera shake, the person must specify an image region ...
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A Theory of Depth From Differential Defocus
... far from the only way to measure depth from differential ...depth from differential changes in: aperture size, as in many classic depth from defocus methods; optical power of the ...
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Depth from Defocus Based on Geometric Constraints
... 2 College of Science, Northeast Agricultural University, Harbin, China *Email: [email protected] Abstract— This paper proposes a Depth from Defocus (DFD) model based on geometric constraints. The two ...
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Defocus Video Matting
... single plane of points perpendicular to the lens axis with pin- hole image α F has a defocused lens image given by the convolu- tion α F ⊗ disk(r) [Hecht ...background plane to the scene ...
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Depth image-based plane detection
... the plane size, within a certain range the threshold T(d, j) is dynamically updated only based on the plane ...growing plane is in its small or medium size, the threshold negative ...
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Accurate depth from defocus estimation with video rate implementation
... focal plane the lens is held between the screen and a distant source, and the light energy from the distant source is made to enter through the rear end of the ...focused image is obtained by ...
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On defocus, diffusion and depth estimation
... to image plane distance v, the focal length F or the aperture radius ...evaluated from the intensity change along corre- sponding pixels in the multi-focus images instead of using window-based blur ...
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Rational operator based depth from defocus approach to scene reconstruction
... generated from a flat plane that is perpendicular to the optical ...deviates from the centre of the map due to the focus adjustment during the ...an image is defocused by moving the sensor, it ...
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System and measurement method for binocular pupillometry to study pupil size variability
... the pupil in infrared ...the pupil size with a sampling frequency of 5 – 25 Hz for monocular registration, and of 25 – 60 Hz for binocular ...eye image was re- corded at a sampling rate ...
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Colour depth from defocus incorporating experimental point spread function measurements
... colour plane weightings (a, /3, y) such that the resulting monochrome image produces better depth estimates than simply using ( ~, ~, +). The research began with experime[r] ...
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Pupil to pupil: The effect of a partner's pupil size on (dis)honest behavior
... examine pupil mimicry in relation to dishonest ...the pupil response of the partner as a factor in their decision to decide on whether to behave ...partner's pupil is used as input into the trade-off ...
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Single image defocus estimation by modified gaussian function
... input image by using Gaussian ...input image and reblurred image is computed to obtain raw sparse ...and defocus blur is directly computed from the local ...the defocus blur is ...
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Metric Measurements on a Plane from a Single Image
... rectified image, from which measurements of the two people can be ...determined from the length ratio between the diagonals of the parallelogram connecting the letter “i” in “in” to the second “i” in ...
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Rational filter design for depth from defocus
... near-focused plane and ...filters. From these results it can be inferred that the new filters estimated the depth at a higher accuracy than the previous ...any defocus conditions by simply modelling ...
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Chimpanzees and humans mimic pupil-size of conspecifics
... and from gaze and pupil-size cues, infer information about the state of mind of the ...humans, pupil-size tends to mimic that of the ...whether pupil-mimicry exists in our ...
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The power of pupil size in establishing trust and reciprocity.
... Kret, Fischer, & de Dreu, 2015; Prochazkova et al., 2018; Wehebrink et al., 2018). Moreover, we predicted that they would also evaluate partners with dilating pupil dilating pupils more positively than part- ners ...
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Prepocesssing pupil size data: Guidelines and code
... the pupil, and therefore also the pupil’s apparent ...in pupil size should ideally be controlled or corrected for, which we acknowledge as a current limitation of our preprocessing pipeline and the ...
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Class size, pupil attentiveness and peer relations
... class size and teaching would be to use a multi- method approach which, in this paper, would combine use of carefully designed teacher ratings of child behaviour (rather than open ended reports) and systematic ...
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Pupil size tracks semantic ambiguity as well as noise
... corresponding pupil response. That is, the pupil will dilate with increasing task challenge level, and then will remain at this relative level of dilation, with little ‘room’ for further dilation or even ...
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Plane Estimation by Active Vision from Point Features and Image Moments
... Structure from Motion (SfM) scheme for either extracting the plane from the reconstructed 3D position of all the tracked points, or for directly estimating the plane parameters by considering ...
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