摘要:
A filter including multiple apertures for use in a camera's autofocus system is described. A variety of implementation examples of the filter are described. In one implementation, the filter includes an opaque portion which blocks light and apertures through which light travels. In another version, the apertures each include a color filter corresponding to a different color. In another example, the filter comprises a light blocking opaque portion with asymmetrically shaped apertures through which light travels. A defocus determination based on the filtered light is performed, and an adjustment to the distance between the optical system and an image sensing device is determined based on the determined defocus.
摘要:
Denoising of a plurality of pixels of a color digital image includes analyzing the plurality of pixels to identify those pixels having a high likelihood of containing significant noise; and forcing those pixels having a high likelihood of containing significant noise to be photometrically coherent with nearby pixels having a lower likelihood of containing significant noise.
摘要:
A method and system for deblurring an image based on motion tracking. Light is recorded at an image sensor of an imaging device to capture an image. Motion of said image sensor is recorded at a motion sensor of the imaging device during the recording of the light at the image sensor. A blur kernel is generated based on the motion.
摘要:
Cameras, optical systems, imaging methods and optical filter configuration methods are described. According to one embodiment, a camera includes an image device configured to receive light of a subject and to provide an image representation of the subject from the light, wherein the image representation is usable to generate a visible image of the subject, a lens system optically coupled with the image device and configured to direct the light to the image device, wherein the image device is configured to generate the image representation while having a first sensitivity to a first wavelength of light and a second sensitivity to a second wavelength of light different than the first sensitivity, and a filter optically coupled with the lens system and corresponding to the image device wherein the filter is configured to pass a first quantity of photons having the first wavelength of light for the subject and a second quantity of photons having the second wavelength of light for the subject.
摘要:
A product has a data encoding pattern thereon. The pattern is formed from groups of marks. Each group occupies a respective area of the product. The marks are of different colours and each group is arranged to have the same average colour.
摘要:
A method and apparatus for detection of optical elements. The apparatus includes an illumination unit for projecting light into a target area to illuminate the target area, and an image capture unit for capturing images of the target area in an illuminated condition and a non-illuminated condition. An image comparison unit compares images of the target area in an illuminated condition and a non-illuminated condition to detect Fresnel reflections of light from the illumination unit.
摘要:
A method of correcting vignetting in an image. The image inlcudes a plurality of pixels, each pixel having an intensity. The image is flattened by adjusting the intensity of each pixel based on a vignette function representative of vignetting characteristics of the image, the vignette function having a plurality of free parameters, each free parameter having a value. A vignette metric is determined based on the flattened image. The values of one or more of the free parameters are adjusted based on the vignette metric, and the flattening is performed based on the adjusted values of the free parameters.
摘要:
A color digital image is processed to reduce blur. First and second color channels of a high frequency feature (e.g., an edge) in the image are compared to derive information that is missing from the second channel due to the blur. The information is used to adjust the feature in the second channel so that sharpeness of the feature is similar in both the first and second channels. As a first example, the processing may be used to correct chromatic aberration in an image captured by a digital camera. As a second example, the processing may be used to reduce blur in images created during film restoration.
摘要:
Imaging apparatuses, image data processing methods, and articles of manufacture are described. In one aspect, an imaging apparatus including an image sensor having a plurality of color sensor arrays is described. Individual sensor arrays include a plurality of sensors configured to provide image data for a plurality of pixels of a respective color component at an initial resolution. The plurality of color sensor arrays overlap and are offset with respect to one another to define a plurality of sub-pixels for individual ones of the pixels. The imaging apparatus includes processing circuitry configured to access the image data for at least one pixel from each of the plurality of color sensor arrays, and using the accessed image data, to determine sub-pixel image data for the respective sub-pixels to form an image of an increased resolution compared with the initial resolution of the color sensor arrays.
摘要:
Imaging methods, cameras, projectors, and articles of manufacture are described according to some aspects of the disclosure. According to one aspect, an imaging method includes providing light of a plurality of regions of an input image, associating light of an individual one of the regions of the input image with a plurality of spatially separated regions, wherein the light of one of the regions of the input image comprises a plurality of wavelengths of light and wherein the spatially separated regions which correspond to the one region of the input image individually comprise light of a respective individual wavelength of the light present in the one region of the input image, providing a plurality of electrical signals, wherein respective ones of the electrical signals correspond to respective ones of the spatially separated regions and respective ones of the different wavelengths of light, and wherein the light of one of the spatially separated regions is substantially all of the light of the respective wavelength of the light of the one region of the input image.