An optical scanning device includes a light source, a scanning member, and an incident optical system. The scanning member two-dimensionally scans a scanning area with the deflected light beam in a first direction and a second direction perpendicular to the first direction. The incident optical system guides the emitted light beam to the scanning member, the incident optical system including the light source. The scanning area includes a first area and a second area surrounding the first area. When the scanning area is viewed from a side of the scanning member, at least a part of the incident optical system is disposed in an area of the second area that overlaps one of two divided areas of the scanning area. The two divided areas are divided by a line segment parallel to the first direction,

A projection system includes an illumination light source configured to emit an illumination light beam, a monitor light source configured to emit a monitor light beam, and a projector configured to project both the illumination light beam and the monitor light beam into a projected combined light beam. A first portion of the projected combined light beam is propagated over a first beam path in a first direction, causing an eye of a user to see a display image. A second portion of the projected combined light beam is propagated over a second beam path in a second direction, causing a monitor camera to capture a monitor image. The monitor image is analyzed to determine an orientation or a position of the monitor image. In response to determining that the monitor image is not properly oriented or positioned, an orientation or position of the projector or the illumination image is adjusted.

An image projecting apparatus including an optical output unit for projecting and image, a camera, a plurality of sensors, and a processor is disclosed. The processor is configured to identify, based on sensing data received through the plurality of sensors, a distance between each of the plurality of sensors and a projection surface, provide, based on a difference between the identified distances being greater than or equal to a pre-set threshold value, a user interface configured to guide a direction adjustment of the image projecting apparatus, and identify, based on a difference between the identified distances being less than the pre-set threshold value, a shape of a projected image by photographing an image projected to the projection surface through the camera, and control the optical output unit to project an image corrected based on the identified shape.

A focus identification method adaptable for a focus identification system is provided. The focus identification method includes: capturing a projection picture to generate a captured picture; dividing the captured picture into a plurality of image regions; calculating a plurality of sharpness values corresponding to the plurality of image regions respectively according to image data of the plurality of image regions; and displaying the plurality of sharpness values on the plurality of corresponding image regions respectively to generate a first focus identification picture. Moreover, the disclosure further discloses a focus identification system applying the focus identification method. The focus identification method and the focus identification system using the same in the disclosure may improve the remote maintenance efficiency.

The present technology relates to a signal processing device and method, and a program that enable easier and more accurate failure detection. The signal processing device includes: an addition unit that adds test data for failure detection to valid data on which predetermined processing is to be performed, two or more samples processed in parallel in different paths having a same sample value in the test data; and a signal processing unit that performs the predetermined processing on the valid data and the test data that has been added to the valid data by a plurality of the paths. The present technology can be applied to in-car cameras.

The embodiments of the disclosure relates to the technical field of projection adjustment. Embodiments specifically disclose a self-adaptive adjustment method and adjustment system for brightness of a projection apparatus. In the disclosure, ambient illuminance and a projection distance of the projection apparatus are obtained by controlling an illuminance sensor and a distance sensor, and a functional relationship among the ambient illuminance, projection plane illuminance and the projection distance is found through analysis and modeling of a large amount of data.

A projector includes: a projection unit projecting a projection image onto a projection surface where an object is located, the object defining a projection area where the projection image should be projected; a distortion correction unit correcting a distortion of the projection image; and a projection control unit causing the projection unit to project a guide image showing a range within which a predetermined site of the projection image can move according to the correction of the distortion, the projection control unit thus prompting a user to adjust a positional relation between the object and the range.

A projector has a projection optical system including a projection lens and a processing device. The processing device makes the projection optical system project a correction image having a rectangular shape. The number of correction points arranged on a first side out of two sides connecting to a vertex located the farthest from the projection lens when projected on a projection surface out of four vertexes of the correction image is larger than the number of correction points arranged on a side different from the two sides. The processing device receives an operation of moving first correction point included in the correction points arranged on the first side, and makes the projection optical system project an output image obtained by applying a distortion correction based on the operation to an input image.

The present disclosure relates to an information processing apparatus and an information processing method for suppressing a decrease in the accuracy of image projection correction. By use of an image projection model using a distortion factor of an fθ lens with an image height of incident light expressed by the product of a focal point distance f and an incident angle θ of the incident light, the posture of a projection section for projecting an image and the posture of an imaging section for capturing a projection plane to which the image is projected are estimated. The present disclosure may be applied, for example, to information processing apparatuses, projection apparatuses, imaging apparatuses, projection imaging apparatuses, projection imaging control apparatuses, or image projection and imaging systems.

The present technology relates to a signal processing device and method, and a program that enable easier and more accurate failure detection. The signal processing device includes: an addition unit that adds test data for failure detection to valid data on which predetermined processing is to be performed, two or more samples processed in parallel in different paths having a same sample value in the test data; and a signal processing unit that performs the predetermined processing on the valid data and the test data that has been added to the valid data by a plurality of the paths. The present technology can be applied to in-car cameras.