In each page of a calendar or a notebook in which a rectangle paper is folded in eight with one side thereof divided into four equal parts and the other side thereof divided into two equal parts and each of front and rear regions of the rectangle paper divided into equal parts by folded lines serves as a page, an identifier which enables specification of the position of the page in the whole rectangle paper is printed. The identifier includes, for example, a combination of alphabets, numerals, and colors. In another embodiment, the identifier is an icon printed at a corner of each page. The icon has a high density portion, and the position of the page with respect to the whole rectangle paper is expressed as the position of the high density portion with respect to the whole icon.

Systems (100) and methods (1000) for operating a shoulder Speaker Microphone (“SM”) device coupled to a radio. The methods comprising: using a speaker and a microphone of the shoulder SM device to facilitate auditory communications to and from a user of the radio; activating a thermal imaging device integrated with the shoulder SM device when the shoulder SM device resides at a location of an incident event; capturing thermal images by the thermal imaging device of the shoulder SM device; and performing operations by the shoulder SM device to cause the thermal images to be streamed over a network.

A CMOS image sensor for a code reader in an optical code recognition system incorporates a digital processing circuit that applies a calculation process to the capture image data as said data acquired by the sequential readout circuit of the sensor, in order to calculate a macro-image from the capture image data, which corresponds to location information of code(s) in the capture image, and transmit this macro-image in the image frame following the capture image data, in the footer of the frame.

A computer-implemented method of calibrating an electronic display screen for touchless gesture control using a calibration device, wherein the method comprises: displaying, by the electronic display screen, a calibration pattern; detecting, using at least one depth camera, a calibration device being placed on the electronic display screen and a reflection of at least a part of the calibration pattern, wherein the reflection is provided by a reflective surface of the calibration device; determining, based on the detected reflection, the position of the calibration device with respect to the displayed calibration pattern on the electronic display screen; defining a touchless gesture control input area for the electronic display screen being observable by the at least one depth camera.

A method for dynamically measuring deformation of a rotating-body mold, including: (S1) subjecting an overall outer surface of the rotating-body mold to three-dimensional measurement to acquire an initial point cloud data; (S2) shooting, by a multi-camera system, the mold from different angles to obtain three-dimensional coordinates of marking points and coding points on the overall outer surface of the rotating-body mold; (S3) rotating the mold, and repeatedly photographing the marking points and the coding points on the mold surface under different angle poses; and calculating three-dimensional coordinates of the marking points and the coding points; and (S4) predicting a point cloud data of the outer surface under different angle poses based on a conversion relationship among the marking points to analyze a deformation degree of the mold during a rotation process.

The present disclosure relates to a two-dimensional (2D) code display method, apparatus, device, and medium. The 2D code display method includes: receiving a 2D code display operation for triggering display of a 2D code image corresponding to a target content, wherein the target content belongs to a first application; in response to the 2D code display operation, displaying the 2D code image including a first primary positioning point and a second primary positioning point that are arranged to overlap, wherein the first primary positioning point is above the second primary positioning point and has a preset color, and wherein the second primary positioning point has a representative color of the first application.

Subject matter disclosed herein relates to systems, devices, and/or processes for processing signals relating to surfaces that may be viewable by subjects though one or more devices. In an embodiment, a surface may include one or more devices embedded therein to provide one or more signals to define a portion of the surface.

An electronic device adapted to apply information to a surface is described. The electronic device comprising a writing element; and a detection circuit adapted to detect the information; wherein the detection circuit identifies portions of the information. A method of implementing an electronic device adapted to apply information to a surface is also described.

A system for detecting an aim point on a display screen targeted by a user comprises a microcomputer that has at least a power source, a processor, a non-volatile memory, an I/O interface, and a display output. A hand held enclosure includes a camera having a field-of-view defined by an X-axis and a Y-axis, a user input, and a microcomputer interface to transmit camera data and user input data to the microcomputer. The aim point is a point located centrally in the field-of-view. The microcomputer is adapted to display two or more reference icons on the display screen, detect the reference icons using the camera, calculate the aim point on the display screen based on the position of the reference icons within the field-of-view of the camera, perform a function based on user input settings and the calculated value of the aim point, and repeat the process as necessary.

A head tracking system uses coded features, highly structured compared to the operating environment, to ensure a high-integrity correspondence map. Coded features can be used to provide a negligible probability of spurious features and probability of misidentification. Ensuring a reliable correspondence map prevents unmodeled errors that arise from an invalid correspondence map. In the case of multiple outliers, existing screening techniques, such as random sample consensus (RANSAC) or fault exclusion, may be used to eliminate excessive outliers. Mature GPS integrity techniques may then be extended to optical pose estimation to establish integrity bounds for single faults that may go undetected by fault detection.