A machine vision system that uses an imager to capture an optical image of a target object that may contain a liquid. The target object is illuminated by an illumination source positioned oppositely from the imager and a predetermined pattern is positioned between the illumination source and the target object so that the imager will capture optical images of the background pattern through any liquid positioned in the target object. A processor is programmed to analyze captured images to detect any distortions of the pattern that are attributable to the presence of a liquid in the target object.

The present disclosure relates to a vehicle collision prevention system and a collision prevention method by using the same, and may include a first light source positioned on a left side of a vehicle, a second light source positioned on a right side of the vehicle, a camera positioned at a center of the vehicle and providing a shape, which is displayed when rays emitted from the first light source and the second light source irradiate an object, as image data, an image processing device that generating braking information based on the image data, and a braking device that performing a braking operation of decreasing a speed of the vehicle or stopping the vehicle based on the braking information.

A computer-implemented method for surface modeling includes: receiving one or more polarization raw frames of a surface of a physical object, the polarization raw frames being captured with a polarizing filter at different linear polarization angles; extracting one or more first tensors in one or more polarization representation spaces from the polarization raw frames; and detecting a surface characteristic of the surface of the physical object based on the one or more first tensors in the one or more polarization representation spaces.

An apparatus includes an RGB-IR image sensor, a structured light projector, and a control circuit. The control circuit may be configured to control a shutter exposure time of the RGB-IR image sensor and a turn on time of the structured light projector to obtain a sequence of images captured by the RGB-IR image sensor, wherein the sequence of images comprises at least one image including a structured light pattern and at least one image where the structured light pattern is absent.

A device may include an image sensor, configured to generate image sensor data representing a vicinity of the device; an image processor, configured to generate a first code from the image sensor data using a code generation protocol; an input validity checker, configured to compare the first code to a second code; and if a similarity of the first code and the second code is within a predetermined range, operate according to a first operational mode; and if the similarity of the first code and the second code is not within the predetermined range, operate according to a second operational mode.

The present invention is to provide an imprint device that can form a circuit pattern with high accuracy even if a deviation occurs in a positional relationship between the circuit pattern and an alignment mark. The imprint device performs an imprinting process in which a mold on which a pattern is formed is brought in contact with an imprint material on a substrate and the pattern is transferred to the substrate at a target position on the substrate, and includes an alignment unit that performs alignment of the mold with the substrate such that the mold and the substrate are at an alignment position corrected based on an amount of relative positional deviation between a pattern mark formed near the pattern of the mold and an alignment mark of the mold obtained by measuring the pattern mark and the alignment mark, and a curing unit that cures the imprint material at the position at which alignment is performed by the alignment unit.

The present invention is to provide an imprint device that can form a circuit pattern with high accuracy even if a deviation occurs in a positional relationship between the circuit pattern and an alignment mark. The imprint device performs an imprinting process in which a mold on which a pattern is formed is brought in contact with an imprint material on a substrate and the pattern is transferred to the substrate at a target position on the substrate, and includes an alignment unit that performs alignment of the mold with the substrate such that the mold and the substrate are at an alignment position corrected based on an amount of relative positional deviation between a pattern mark formed near the pattern of the mold and an alignment mark of the mold obtained by measuring the pattern mark and the alignment mark, and a curing unit that cures the imprint material at the position at which alignment is performed by the alignment unit.

Provided is a small-sized light irradiating device having a simple configuration that projects an optical pattern. The light irradiating device includes a light source and a liquid crystal hologram element, in which the liquid crystal hologram element diffracts transmitted light in a plurality of different directions, the liquid crystal hologram element includes a liquid crystal hologram layer, the liquid crystal hologram layer is a layer that consists of a computer generated hologram and is formed of a composition including a liquid crystal compound, and the liquid crystal hologram layer further includes a plurality of regions in which directions of optical axes derived from the liquid crystal compound are different from each other.

A user is guided to move a device equipped with an illuminator and a camera with respect to a document whose genuineness is to be assessed. The motion includes changing the distance between the device and the document by moving the device or moving the document. Imagery of the document is captured during the movement and analyzed to determine a likelihood that the document includes features indicative of genuineness, such as a hologram, an original photograph, and other regions matching those of a genuine document. The analysis may include identifying regions exhibiting large changes in appearance over relatively small distance changes which characterize holograms, and obtaining the spatial extent of document features.

A implicit structured light decoding method, a computer equipment and a computer-readable storage medium. The method includes: traversing an image captured by a camera to acquire a grayscale value of each pixel point and an ideal neighborhood grayscale distribution; extracting and outputting an updated output image according to the grayscale value of each pixel point and the ideal neighborhood grayscale distribution and in combination with a preset output image; classifying stripe central points in the updated output image into different stripes; determining a correspondence between stripes in the updated output image and stripes in a structured light image according to the different stripes; and decoding all stripe central points by using triangulation method in combination with the correspondence between the extracted stripes and the projected stripe pattern. This solution can efficiently and robustly decode the implicit stripe-based structured light on a basis of ensuring precision.