The embodiments of the present disclosure provide a code rate control method and apparatus, an image acquisition device, and a readable storage medium. The method comprises: acquiring the gain and exposure time of an image to be encoded from an image processing module of an image acquisition device; obtaining corresponding reference distortion degree according to the gain and exposure time of said image; calculating the difference between the distortion degree in a characteristic region of said image and the reference distortion degree; calculating a distortion tolerance degree of macro blocks constituting said image according to the difference between the distortion degree in the characteristic region of said image and the reference distortion degree; performing macro block predictions on the respective macro blocks in said image, to obtain an optimum macro block prediction mode; and encoding said image, which corresponds to the optimum macro block prediction mode, in order to control the code rate of said image. By means of the cooperation of image processing and encoding, said method can achieve code rate control while guaranteeing that the encoded image has a good subjective presentation.

A method for determining extrinsic camera parameters includes: starting camera movement, capturing a first raw image with parallel first and second patches at a first point of time, and a second raw image with parallel third and fourth patches at a second point of time. A distance between the first and second patches and between the third and fourth patches is the same. A reference position A of a first patch image feature, a reference position C of a second patch image feature, an offset position B of the feature of the first patch in the third patch, and an offset position D of the feature of the second patch in the fourth patch are detected. An epipolar model is applied based on the positions A-D and a distance travelled by the camera between the first and second time points. Extrinsic camera parameters are determined from the epipolar model.

A horizontal correction method for a detection platform implemented in an electronic device includes controlling a laser device to emit laser to a plurality of points on a motion platform and calculates a height value of each of the plurality of points, calculating tilt data of the motion platform according to the height value of each of the plurality of points; determining position compensation data of the motion platform according to the tilt data; and controlling the motion platform to move according to the position compensation data, and adjusting a position of the motion platform to a horizontal position.

The present invention relates to a light source device having minimized exposure of an LED package formed on the light source device, and a camera inspection device using same such that erroneous detections during camera inspection can be minimized A camera inspection device according to the present invention comprises: a portable terminal cradle on which a portable terminal equipped with a camera is cradled; a light source device installed to be spaced apart from the upper portion of the portable terminal cradle by a predetermined distance and configured to emit light towards the camera; and a controller for controlling the turning on/off of the light source device and imaging operations of the camera so as to perform a light bleeding inspection of the camera mounted on the portable terminal. A light source device according to the present invention comprises: an LED package having multiple LED elements mounted on the upper surface of a printed circuit board; and an LED package cover having multiple coupling holes into which the multiple LED elements mounted on the LED package are inserted, respectively, the LED package cover covering a part of the upper surface of the printed circuit board, which is exposed between the multiple LED elements. The LED package cover having a lusterless surface is used to insert the LED elements mounted on the LED package into the coupling holes and to cover same, thereby preventing light bleeding inspection erroneous detections caused by exposure of elements, wires, or soldering parts on side surfaces of the LED elements. The LED package cover has the same height as that of the LED elements of the LED package, thereby preventing the LED elements from being damaged by exposure to the outside.

A calibration fixture that enables more accurate calibration of a touch probe on, for example, a CMM, with respect to the camera. The camera is mounted so that its optical axis is approximately or substantially parallel with the z-axis of the probe. The probe and workpiece are in relative motion, along a plane defined by orthogonal x and y axes, and optionally the z-axis and/or and rotation R about the z-axis. The calibration fixture is arranged to image from beneath the touch surface of the probe and, via a 180-degree prism structure, to transmit light from the probe touch point along the optical axis to the camera. Alternatively, two cameras respectively view the fiducial location relative to the CMM arm and the probe location when aligned on the fiducial. The fixture can define an integrated assembly with an optics block and a camera assembly.

Provided are methods for verifying the performance of an image sensor mounted to a vehicle, which can include causing alignment of a collimator with an image sensor mounted to a vehicle, receiving sensor data associated with the image sensor based at least in part on causing the alignment of the collimator with the image sensor, determining that the sensor data does not satisfy a performance specification associated with the image sensor, determining an image sensor alert associated with the image sensor based at least in part on determining that the sensor data does not satisfy the performance specification associated with the image sensor, and routing the image sensor alert.

An image capture apparatus that captures an image of a chart for correcting distortion of a lens, obtains a deviation angle indicating an angle of deviation of the image capture apparatus from a directly facing positional relationship relative to the chart, obtains a deviation distance indicating a distance of deviation from the directly facing positional relationship, obtains an appropriate distance between the chart and the image capture apparatus in the directly facing positional relationship, and presents information based on the deviation angle and the deviation distance so that the directly facing positional relationship is established, and present information regarding the appropriate distance in a case in which the deviation distance and the deviation angle have each fallen below a predetermined determination threshold.

Disclosed example video extensometers include: a load string configured to secure a test specimen; an imaging device configured to capture images of a surface of the test specimen when secured in the load string; a storage device configured to store a plurality of first calibration parameters corresponding to intrinsic properties of the imaging device; and control circuitry configured to: perform a verification process using the first calibration parameters to verify that a plurality of second calibration parameters correspond to an arrangement of the test specimen with respect to the imaging device; and perform an optical strain measurement process to measure displacement of the test specimen based on the first calibration parameters and the second calibration parameters.

A method for processing sensor data in a system that includes multiple sensors for detecting at least a subarea of surroundings around the system. The method includes at least the following steps: a) reading in sensor data detected at least partially in parallel, b) checking whether an at least partial impairment of the detection by the respective sensor may be established for one or for multiple of the sensors on the basis of the read-in sensor data, c) adapting the use of the sensor data, taking the check from step b) into account.

A display device includes a plurality of touch electrode disposed in the display area; a touch connection electrode which connects two adjacent touch electrodes which are spaced apart from each other, among the plurality of touch electrodes; and a crack detecting electrode which surrounds the camera area and is disposed on the same layer as the plurality of touch electrodes, the plurality of touch electrodes include a plurality of first touch electrodes extending in a first direction and a plurality of second touch electrodes extending in a second direction intersecting the first direction, wherein the crack detecting electrode includes a first crack detecting electrode which surrounds the camera area and a second crack detecting electrode which is disposed in the display area and extends in the second direction, and the second crack detecting electrode has a zigzag pattern.