Abstract: An image capturing device includes a plurality of light emitters, an image capturer, a memory and a processor. The memory stores a target brightness value. The processor controls the light emitters to emit light and controls the image capturer to capture an image. The image is divided into a plurality of areas and the light emitted by each of the light emitters corresponds to one of the areas. The processor calculates a current brightness value of each area and calculates an absolute difference between the current brightness value of each area and the target brightness value. The processor determines whether each absolute difference is larger than a first threshold. According to a determination result, the processor adjusts an exposure parameter of the image capturer or adjusts a light emitting intensity of the light emitter corresponding to the area with the absolute difference larger than the first threshold.

Abstract: A clean method is configured for a surveillance camera. The surveillance camera comprises a mounting bracket and a main body which is rotatable relative to the mounting bracket so that the main body is rotatable around at least one rotation axis. The clean method includes the following steps. Drive the main body to rotate in a first path from a prepared position to an end of the first path, which is away from the prepared position, and to strike the mounting bracket to get the main body cleaned. Correct a relative position relationship between the main body and the mounting bracket.

Abstract: A wide-angle illumination device includes a base, a first light guiding module and two second light guiding modules. The base includes a central region and two lateral regions, and the two lateral regions are respectively located on opposite positions of the central region. A first light emitting module is disposed on the central region, and two second light emitting modules are disposed on the two lateral regions. The first light guiding module is disposed on the central region and matched with the first light emitting module, to guide a first optical signal of the first light emitting module toward a front of the base. The two second light guiding modules are disposed on the lateral regions and matched with the second light emitting modules, to guide a second optical signal of the second light emitting module out of an end of the base.

Abstract: A camera using an automatically depth-of-field adjusting method includes a camera lens, a diaphragm, a light-sensing part, and a controller. The light-sensing part can receive visible light of a first wave band and invisible light of a second wave band. The controller performs an adjusting procedure, according to which the controller measures a first light intensity of ambient light of a scene relative to the first wave band and a second light intensity of the ambient light relative to the second wave band, and when the controller determines that a ratio of a difference between the first intensity and the second intensity to a sum of the first intensity and the second intensity is less than a predetermined value, controls the diaphragm to adjust an aperture of the diaphragm according to a current focal length of the camera lens.

Abstract: An image flow analyzing method with low datum storage and low datum computation is applied to a related camera device and a related camera system. The image flow analyzing method includes defining a monitoring region on a video image, detecting an input timing and an output timing of an object passing through the monitoring region, utilizing the input timing and the output timing to compute a first average staying amount and a first average staying period of the object within the monitoring region via a specific time length, and utilizing the first average staying amount and the first average staying period to compute a second average staying amount and a second average staying period of the object within a statistics range defined by several specific time lengths in accordance with an external command.

Abstract: A video stream processing method is suitable for a video stream device having an encoder for generating a plurality of video streams. The video stream processing method includes receiving image data, setting a priority of each video stream, setting an effective stream parameter of each video stream according to the priority of each video stream, a predetermined stream parameter of each video stream and an encoding power of the encoder, and encoding the image data according to the effective stream parameter of each video stream for generating the plurality of video streams.

Abstract: An auto-focusing method capable of varying focal length of a lens of an camera device according to time variation is applied to the camera device with the lens. The auto-focusing method includes dividing a capturing period of the camera device into a plurality of time intervals, generating a plurality of sampling values within each time interval by several focusing process, utilizing the plurality of sampling values to calculate an estimation value relative to the each time interval, and driving the camera device to adjust the focal length of the lens of an camera device in accordance with capturing time of the camera device and the estimation values of the plurality of time intervals.

Abstract: Disclosed herein is a system for mediating connection for assisting a first node of a network for NAT traversal. The system for mediating connection includes at least three response servers respectively for receiving a detection message passing through a router from the first node, and for sending a response message passing through the router to the first node according to the detection message. The response message includes an EPN. The at least three response servers are configured to respectively add the EPNs into the response messages after a port number of each of the detection messages received by the at least three response servers is modified, by the router, as the EPNs respectively, wherein a connection is built between the first node and a second node according to a second rule for proximal EPNs and a network address of the second node.

Abstract: A light emitting device includes a casing, a lighting module, and a lens module. The lighting module is disposed in the casing for providing light and includes first and second light sources. The lens module faces the lighting module and includes a first lens aligned with the first light source, a second lens aligned with the second light source, a sliding frame, and a driving motor. The sliding frame is fixed to the first lens and has a thread portion. The driving motor has a screw rod for engaging with the thread portion, to make the sliding frame movable along the screw rod. The driving motor rotates the screw rod to make the thread portion drive the first and second lenses close to or away from the first and second light sources. Accordingly, the present invention reduces the manufacturing cost of the light emitting device and simplifies its mechanical design.

Abstract: A method for tagging an object in a video includes playing a video with a plurality of frames, selecting a target object in a playing frame by a cursor, obtaining at least one timestamp and at least one bounding box that correspond to the target object, from an object meta data, showing a selectable area in the playing frame according to the bounding box corresponding to the timestamp of the playing frame, generating at least one tag function item linking to the selectable area, and tagging the target object according to one of the at least one tag function item. Therefore, the target object in the video can be tagged in an easy and fast way.

Abstract: An object matching method is applied to a camera system with an object matching function. The object matching method includes detecting a moving object within overlapped monitoring areas of two image capturing units to generate a first coordinate point and a second coordinate point respectively upon a first coordinate system and a second coordinate system, calculating at least one transforming parameter of the first coordinate system relative to the second coordinate system, acquiring a reliability level according to a comparison result between the transforming parameter and a threshold, determining a final transform parameter by the reliability level, utilizing the final transform parameter to transform the first coordinate point into a third coordinate point upon the second coordinate system, and determining whether the first coordinate point and the second coordinate point indicate the same object by difference between the third coordinate point and the second coordinate point.

Abstract: A pre-selectable video file playback system and method, and a computer program product are provided. Multiple first images are captured from multiple frame images in a first time interval, and two chronological first images thereafter are compared sequentially. A next first image is selected if the next first image is substantially different from a previous first image, and the next first image is not selected if the next first image is substantially the same as the previous first image. By displaying the selected first images, the number of images that users watch may be reduced.

Abstract: A network communication system includes a surveillance device, one or more display devices, a cloud server, and an electronic device. The surveillance device is for capturing an environmental image of an environment. The cloud server stores connection information of the surveillance device and connection information of the display device bound to the surveillance device. When the electronic device sends a connection request requesting to be connected to and communicate with the surveillance device to the cloud server, the cloud server enables the electronic device to be simultaneously connected to and communicate with the surveillance device and the display device bound to the surveillance device according to the connection request and the connection information such that the electronic device receives the environmental image from the surveillance device and transmits one or more specific images to the display device.

Abstract: A surveillance system and method are provided. The surveillance system includes a video capturing device and a processing device. The video capturing device obtains a video and generates metadata associated therewith. The metadata records a trajectory of an object appearing in the video. The processing device executes the video playback method, namely to obtain the metadata, define a section on the trajectory based on information of the trajectory, command a player to play the video by a first speed when the object appears on the section, and selectively command the player to play the video by a second speed when the object appears on the trajectory except the section.

Abstract: A camera includes an image-capturing part, a plurality of lamp cups, and a plurality of lighting parts disposed in the lamp cups correspondingly. The lamp cup includes two reflection members oppositely disposed. One of the reflection members thereon defines a light source position and has a first reflecting surface. The other reflection member has a second reflecting surface toward the light source position, and a third reflecting surface, close to the second reflecting surface and toward the first reflecting surface. The first reflecting surface and the third reflecting surface form a light-out opening therebetween. Some light travels from the light source position to be reflected by the second reflecting surface and the first reflecting surface in order to emit out of the light-out opening. Some light travels from the light source position to be reflected by the third reflecting surface to emit out of the light-out opening.

Abstract: A setting method of a counting flow path is applied to an image monitoring system and a related computer-readable media. The counting flow path is utilized to determine whether an object passes through a monitoring area. The setting method includes drawing two boundaries on a video frame correlative to the monitoring area to define the counting flow path, detecting relative position between a first angle control point and a second angle control point of the counting flow path, adjusting an angle formed by virtual lines stretching from the boundaries according to the relative position between the said angle control points, and utilizing an initial point and a final point detected by the counting flow path while the objects moves into or out of the counting flow path to determine whether the object passes through the counting flow path.

Abstract: A motor control method includes steps of receiving a plurality of control commands through an input unit; driving a motor module to control a moving mode of an object according to the control commands by a processing unit, such that the motor module generates a plurality of coordinate information relative to the moving mode; collecting the control commands from the input unit and collecting the coordinate information from the motor module by the processing unit; and driving the motor module to reproduce the moving mode of the object according to the control commands and the coordinate information by the processing unit.

Abstract: A verification method for people counting includes steps of displaying a people counting video by a display device, wherein the people counting video shows an entry and exit boundary and an accumulated number of persons; when at least one person exists in the people counting video, displaying an initial position and a current position of each of the at least one person by the display device; determining whether each of the at least one person passes across the entry and exit boundary according to the initial position and the current position of each of the at least one person by a user, so as to determine whether the accumulated number of persons is incorrect; and when the user determines that the accumulated number of persons is incorrect, receiving a modified number of persons from the user by an input device.

Abstract: The disclosure provides a method of switching video images and a surveillance system. The method includes the following steps. A first video image is displayed in a monitoring interface. Whether a target object in the first video image enters into a designated region in the first video image is determined. Whether a ratio of the targeted object to the first video image is smaller than or equal to a first threshold is determined when the target object enters into the designated region. When the ratio is smaller than or equal to the first threshold, a second video image is displayed in the monitoring interface. The designated region in the first video image is related to a geographic position, and the second video image is a video image related to the geographic position.