Abstract:
A method for compensating for light reflected from non-uniform targets comprises illuminating, with an illumination unit, a target. During a first frame, the illumination unit is configured to project a uniform pattern onto the target. During a second frame, the illumination unit is configured to project a high spatial-frequency pattern onto the target in such a way as to redistribute spectral energy to higher frequencies. The method further includes acquiring, with a sensor unit, first light data reflected from the target within the first frame and second light data reflected from the target within the second frame. Further, the method includes calculating, with the one or more processors, normalized light data by dividing, within the spatial frequency domain, the second light data by the first light data.
Abstract:
A method for facilitating removal of multipath signal interference from light data can comprise illuminating, with an illumination unit, a target with a light source. The illumination unit can be configured to project a high spatial -frequency pattern onto the target in such a way as to redistribute spectral energy to higher frequencies. The method can also comprise acquiring, with a sensor unit, reflected light data reflected from the target. The reflected light data can comprise an array of spatial domain information received from light reflected by the target. Further, the method can comprise processing, with the one or more processors, the reflected light data. The processing applies a high-pass filter within the spatial domain to the reflected light data.
Abstract:
An image processing circuit comprises a first sample-and-hold circuit that samples a first data from a pixel; a second sample-and-hold circuit that samples a second data from the pixel; a voltage-to-current circuit that includes a resistor and a current source, and receives the first data and the second data to output a difference data; and a black sun spot determination circuit. The black sun spot determination circuit compares a first VSL level at a first time with a second VSL level at a second time, both from the second sample-and-hold circuit, and determines the presence of a black sun spot based on a difference between the first and second level.
Abstract:
The disclosed subject matter includes an apparatus configured to remove a shading effect from an image. The apparatus can include one or more interfaces configured to provide communication with an imaging module that is configured to capture the image, and a processor, in communication with the one or more interfaces, configured to run a module stored in memory. The module is configured to receive the image captured by the imaging module under a first lighting spectrum, receive a per-unit correction mesh for adjusting images captured by the imaging module under a second lighting spectrum, determine a correction mesh for the image captured under the first lighting spectrum based on the per-unit correction mesh for the second lighting spectrum, and operate the correction mesh on the image to remove the shading effect from the image.
Abstract:
An imaging controller includes an index calculator to calculate an index value for each of divided areas of images captured by a plurality of imaging units, the index value for evaluating a photographic state of each of the divided areas, an evaluation value calculator to evaluate the images and an overlapping area between the images on the basis of the index value of each divided area calculated by the index calculator and calculate an overall evaluation value, and a condition determiner to determine an imaging condition for each of the imaging units on the basis of the overall evaluation value calculated by the evaluation value calculator.
Abstract:
The method of manufacturing a photograph comprises, in the following order, the steps: a) focussing, so as to reach a first focussing state (A), which is a desired in-focus state with respect to an image plane (87) of a focussed-state detection arrangement (70); b) shifting from said first focussing state (A) to a second focussing state (B), which is different from said first focussing state (A); and c) taking an image by means of said image taking element (60). The image taking apparatus (1) comprises an image-forming optical system (20); a focussing section (29); a focussed-state detection arrangement (70); an image taking element (60); and a control module (4); wherein said control module (4) is adapted to adjusting said focussing section (29), so as to shift from said first focussing state (A) to said second focussing state (B). An enhanced control of the in-focus state of taken images can be achieved. In one aspect, very sharp focussing can be achieved, and in another aspect, the formation of Moiré patterns may be effectively suppressed.
Abstract:
Image data is processed to facilitate focusing and/or optical correction. According to an example embodiment of the present invention, an imaging arrangement collects light data corresponding to light passing through a particular focal plane. The light data is collected using an approach that facilitates the determination of the direction from which various portions of the light incident upon a portion of the focal plane emanate from. Using this directional information in connection with value of the light as detected by photo sensors, an image represented by the light is selectively focused and/or corrected.
Abstract:
A method for facilitating removal of specular reflection noise from light data can include illuminating, using an illumination unit, a target with a light source. The illumination unit is configured to project light with a spatial light pattern onto the target. The method can also include acquiring, with a sensor unit, light data that is reflected from the target. The light data may comprise a directly reflected spatial light pattern and a specular reflected spatial light pattern. The directly reflected spatial light pattern and the specular reflected spatial light pattern comprise at least one spatial distinction that distinguishes the directly reflected spatial light pattern from the specular reflected spatial light pattern. The method can further comprise processing the light data to distinguish the directly reflected spatial light pattern from the specular reflected spatial light pattern based upon the at least one spatial distinction.