Light Field Editing Based on Reparameterization
... kd-tree in the affinity space, which allows them handling large datasets. However, they scale poorly with the number of dimensions. Other methods propose to increase the efficiency and generality of the propagation by posing as different energy minimization systems: Li et al. [11] reformulate the propaga ...
... kd-tree in the affinity space, which allows them handling large datasets. However, they scale poorly with the number of dimensions. Other methods propose to increase the efficiency and generality of the propagation by posing as different energy minimization systems: Li et al. [11] reformulate the propaga ...
Resolution in Confocal Microscopy
... need to further our investigation into other aspects of microscopy before a decision to favour a particular microscope is used, even when comparing single and two-photon confocal microscopes. There may be some preferences in using light with a longer wavelength due to the biologicals being imaged, t ...
... need to further our investigation into other aspects of microscopy before a decision to favour a particular microscope is used, even when comparing single and two-photon confocal microscopes. There may be some preferences in using light with a longer wavelength due to the biologicals being imaged, t ...
On the Difference between Seeing and Image Quality: When the
... pheric turbulence, called “seeing”. It is traditionally characterised by the Fried parameter (r 0) – the diameter of a tele scope such that its diffraction-limited res olution equals the seeing resolution. The well-known Kolmogorov turbulence model describes the shape of the at mospheric long-ex ...
... pheric turbulence, called “seeing”. It is traditionally characterised by the Fried parameter (r 0) – the diameter of a tele scope such that its diffraction-limited res olution equals the seeing resolution. The well-known Kolmogorov turbulence model describes the shape of the at mospheric long-ex ...
Chapter O2
... and reflect back toward the arrow. The angle at which θr a light ray reflects is the same as the angle of incidence. As you can see, the reflected rays all pass through one point as they travel away from the mirror. If a piece of paper or screen were placed at O2.1 A real object and a concave mirror ...
... and reflect back toward the arrow. The angle at which θr a light ray reflects is the same as the angle of incidence. As you can see, the reflected rays all pass through one point as they travel away from the mirror. If a piece of paper or screen were placed at O2.1 A real object and a concave mirror ...
Preview of “ZEISS Microscopy Online ...opy Basics | Objectives”
... Such objectives are corrected for axial chromatic aberration in blue and red wavelengths, which are about 486 and 656 nanometers, respectively. Both are brought into a single common focal point. Achromatic objectives are also corrected for spherical aberration in ...
... Such objectives are corrected for axial chromatic aberration in blue and red wavelengths, which are about 486 and 656 nanometers, respectively. Both are brought into a single common focal point. Achromatic objectives are also corrected for spherical aberration in ...
Photoacoustic imaging velocimetry for flow
... of the FOV was used as a standard to assess the improvement of image uniformity in contrast. After PA reconstruction, an image sequence according time can be acquired, and each image shows the absorbed optical deposit distribution at different time. Thus the dynamic information of moving light-absor ...
... of the FOV was used as a standard to assess the improvement of image uniformity in contrast. After PA reconstruction, an image sequence according time can be acquired, and each image shows the absorbed optical deposit distribution at different time. Thus the dynamic information of moving light-absor ...
Introduction: When waves encounter obstacles (or openings), they
... shadow. Thus, the shadows formed by small obstacles are not sharp. This bending of light round the edges of an obstacle or the encroachment of light within the geometrical shadow is known as diffraction. Similarly, if an opaque obstacle MN is placed in the path of light [Figure 2 (b)], there should ...
... shadow. Thus, the shadows formed by small obstacles are not sharp. This bending of light round the edges of an obstacle or the encroachment of light within the geometrical shadow is known as diffraction. Similarly, if an opaque obstacle MN is placed in the path of light [Figure 2 (b)], there should ...
Discussion questions Section 29.4 Images of images 851
... To locate an image, we need to track a minimum of two rays coming from the same point. Since we have proved in the previous chapter that this type of image is not distorted, we can use an on-axis point, O, on the object, as in figure a/1. The results we derive will also hold for off-axis points, sin ...
... To locate an image, we need to track a minimum of two rays coming from the same point. Since we have proved in the previous chapter that this type of image is not distorted, we can use an on-axis point, O, on the object, as in figure a/1. The results we derive will also hold for off-axis points, sin ...
Confocal Microscopy - Emory Physics
... point. (Recall from introductory optics that points do not need to be at the focal point of the lens for the system of lenses to form an image.) In confocal microscopy, the aim is to see only the image of the dark blue point.[1] Accordingly, if a screen with a pinhole is placed at the other side of ...
... point. (Recall from introductory optics that points do not need to be at the focal point of the lens for the system of lenses to form an image.) In confocal microscopy, the aim is to see only the image of the dark blue point.[1] Accordingly, if a screen with a pinhole is placed at the other side of ...
Mirrors
... Consider three rays emerging from the top of the arrow. (If you are viewing this document in Microsoft Word, use the zoom level in the upper right hand corner to make the page and the drawing larger, if you wish.) The first (the lowest) ray travels towards the mirror parallel to the principal axis. ...
... Consider three rays emerging from the top of the arrow. (If you are viewing this document in Microsoft Word, use the zoom level in the upper right hand corner to make the page and the drawing larger, if you wish.) The first (the lowest) ray travels towards the mirror parallel to the principal axis. ...
Spherical Mirrors
... Consider three rays emerging from the top of the arrow. (If you are viewing this document in Microsoft Word, use the zoom level in the upper right hand corner to make the page and the drawing larger, if you wish.) The first (the lowest) ray travels towards the mirror parallel to the principal axis. ...
... Consider three rays emerging from the top of the arrow. (If you are viewing this document in Microsoft Word, use the zoom level in the upper right hand corner to make the page and the drawing larger, if you wish.) The first (the lowest) ray travels towards the mirror parallel to the principal axis. ...
Quantitative determination of chromophore concentrations from 2D
... photoacoustic signal amplitude is assumed to be proportional to the optical absorption coefficient, μa , allows quantitative photoacoustic blood oxygenation measurements to be made. However, this type of simple linear inversion is only valid for optically homogeneous targets. Its application is ther ...
... photoacoustic signal amplitude is assumed to be proportional to the optical absorption coefficient, μa , allows quantitative photoacoustic blood oxygenation measurements to be made. However, this type of simple linear inversion is only valid for optically homogeneous targets. Its application is ther ...
Optical Generation of the Visual Stimulus
... steradian (lm / m2 / sr) or candelas per meters squared (cd / m2)), As is the source area, Ap is the area of the pupil, and D is the distance from the pupil to the source (so (Ap / D 2) is the solid angle the pupil subtends). The area of the image element on the retina is ...
... steradian (lm / m2 / sr) or candelas per meters squared (cd / m2)), As is the source area, Ap is the area of the pupil, and D is the distance from the pupil to the source (so (Ap / D 2) is the solid angle the pupil subtends). The area of the image element on the retina is ...
A spatial light modulator for ion trapping experiments
... transitions at 397nm, 866nm and 854nm are used for cooling the ions, repumping them to the electronic ground state and readout techniques. From [14] about 1s. The S1/2 and D5/2 states are used to encode the qubit and it can be manipulated with light of about 729nm wavelength. This transition is chos ...
... transitions at 397nm, 866nm and 854nm are used for cooling the ions, repumping them to the electronic ground state and readout techniques. From [14] about 1s. The S1/2 and D5/2 states are used to encode the qubit and it can be manipulated with light of about 729nm wavelength. This transition is chos ...
Practical aspects of Microscopy
... Microscopy is a field of investigation which is used to study objects which are too small to be easily viewed by the human eye. Viewing and studying objects that range in size from millimeters (1 mm = 10-3 meter) to nanometers (1 nm = 10-9 meter) intrigues everyone and is currently applied to every ...
... Microscopy is a field of investigation which is used to study objects which are too small to be easily viewed by the human eye. Viewing and studying objects that range in size from millimeters (1 mm = 10-3 meter) to nanometers (1 nm = 10-9 meter) intrigues everyone and is currently applied to every ...
Microscopes - Photonics Research Group
... tube length of the microscope. In general, O9 is an aerial image for which an ocular Loc (or the eyepiece) acts as a magnifier in front of the eye. Since Loc , coupled with the corneal surface and lens of the eye, produces an erect image O0 of O on the retina, the object appears inverted to the obse ...
... tube length of the microscope. In general, O9 is an aerial image for which an ocular Loc (or the eyepiece) acts as a magnifier in front of the eye. Since Loc , coupled with the corneal surface and lens of the eye, produces an erect image O0 of O on the retina, the object appears inverted to the obse ...
Polarization microscopy with the LC-PolScope
... the highest resolution of the light microscope. It rapidly generates a birefringence map whose pixel brightness is directly proportional to the local optical anisotropy, unaffected by the specimen orientation in the plane of view, as well as a map depicting the slow axis orientation of the birefrin ...
... the highest resolution of the light microscope. It rapidly generates a birefringence map whose pixel brightness is directly proportional to the local optical anisotropy, unaffected by the specimen orientation in the plane of view, as well as a map depicting the slow axis orientation of the birefrin ...
light is - msmcgartland
... • A fluorescent tube is much more efficient than a regular incandescent light bulb. • About 20% of the electrical energy used in a fluorescent light is converted to visible light, but only 5% of the electrical energy used in an incandescent bulb is converted to visible light. • If you place you ha ...
... • A fluorescent tube is much more efficient than a regular incandescent light bulb. • About 20% of the electrical energy used in a fluorescent light is converted to visible light, but only 5% of the electrical energy used in an incandescent bulb is converted to visible light. • If you place you ha ...
Light sheet-based fluorescence microscopy: more dimensions, more
... finally (4) control of different mechanical and electronic parts, collection, and postprocessing of the data (Fig. 5). The illumination unit generates the light sheet that is used to excite the fluorophores. It overlaps with the focal plane in the specimen. The laser provides a collimated beam. An a ...
... finally (4) control of different mechanical and electronic parts, collection, and postprocessing of the data (Fig. 5). The illumination unit generates the light sheet that is used to excite the fluorophores. It overlaps with the focal plane in the specimen. The laser provides a collimated beam. An a ...
Home Lab 8 Curved Mirrors, Ray Diagrams, and Simulations
... Determine the focal length of a concave mirror – quickly with a minimum of materials. For a spherical concave mirror – parallel rays of light focus to a point. The distance from the mirror to the focused point image is the focal length of the mirror. Materials Included: • Economy Optical ...
... Determine the focal length of a concave mirror – quickly with a minimum of materials. For a spherical concave mirror – parallel rays of light focus to a point. The distance from the mirror to the focused point image is the focal length of the mirror. Materials Included: • Economy Optical ...
Vision and Optical Instruments
... image of a red blood cell that almost fills the cross-sectional area of a tiny capillary makes us wonder how blood makes it through and not get stuck. We are able to see bacteria and viruses and understand their structure. It is the knowledge of physics that provides fundamental understanding and mo ...
... image of a red blood cell that almost fills the cross-sectional area of a tiny capillary makes us wonder how blood makes it through and not get stuck. We are able to see bacteria and viruses and understand their structure. It is the knowledge of physics that provides fundamental understanding and mo ...
Wave optics theory and 3-D deconvolution
... which seek to surpass the diffraction limit. Computational super-resolution has recently been explored in light field photography, and shown to be effective at recovering resolution in the manner described above. However, these algorithms make assumptions typical at macroscopic photographic scales: ...
... which seek to surpass the diffraction limit. Computational super-resolution has recently been explored in light field photography, and shown to be effective at recovering resolution in the manner described above. However, these algorithms make assumptions typical at macroscopic photographic scales: ...
Measuring the Modulation Transfer Function of
... edges compared with the background. The method to measure the MTF by slanted-edge target is called slantededge method or slanted-edge analysis.1 This is the least computational method for MTF measurement compared with the methods using other two targets. Also, this method is a single measurement. In ...
... edges compared with the background. The method to measure the MTF by slanted-edge target is called slantededge method or slanted-edge analysis.1 This is the least computational method for MTF measurement compared with the methods using other two targets. Also, this method is a single measurement. In ...
Wave Optics Theory and 3-D Deconvolution for the Light Field
... to 10-mm. This is not practical for most commercial sensors, which are recessed inside the body of the camera, but it is possible to use a relay lens system placed in between the camera and the microlens array to re-image the lenslets’ back focal plane onto the sensor. For example, we use a relay le ...
... to 10-mm. This is not practical for most commercial sensors, which are recessed inside the body of the camera, but it is possible to use a relay lens system placed in between the camera and the microlens array to re-image the lenslets’ back focal plane onto the sensor. For example, we use a relay le ...
Image intensifier
An image intensifier or image intensifier tube is a vacuum tube device for increasing the intensity of available light in an optical system to allow use under low-light conditions, such as at night, to facilitate visual imaging of low-light processes, such as fluorescence of materials in x-rays or gamma rays (x-ray image intensifier), or for conversion of non-visible light sources, such as near-infrared or short wave infrared to visible. They operate by converting photons of light into electrons, amplifying the electrons (usually with a microchannel plate), and then converting the amplified electrons back into photons for viewing. They are used in devices such as night vision goggles.