Abstract: An image processing method includes steps of obtaining a first image under a first field of view; generating a first rectangular mask in the first image; converting first X-Y plane coordinates of four end points of the first rectangular mask into spherical coordinates; obtaining a second image under a second field of view; converting the spherical coordinates into second X-Y plane coordinates corresponding to the second image; determining whether the second X-Y plane coordinates of the end points all are located in the second image; and if the second X-Y plane coordinates of the end points all are located in the second image, generating a second rectangular mask in the second image by a maximum X coordinate value, a maximum Y coordinate value, a minimum X coordinate value and a minimum Y coordinate value of the second X-Y plane coordinates of the end points.

Abstract: An automatic light adjusting method applied to a camera having at least one image capturing unit and a plurality of lighting units includes driving the plurality of lighting units to output maximal illumination, driving the at least one image capturing unit to acquire a first image by a first exposure duration, calculating a plurality of first light intensity of a plurality of regions on the first image, comparing the plurality of first light intensity with a predetermined range, and determining whether to set a first ratio about the plurality of first light intensity as a lighting limitation ratio of the plurality of lighting units according to a comparison result.

Abstract: An assembling set including frame and assembling assembly. The frame includes fixing member and restricting member. The fixing member has through slot having restricting section and releasing section extending along first axis. The restricting member includes main plate and restricting protrusion. The main plate is slidably on the fixing member so that the restricting protrusion is slidable in the through slot along second axis which is nonparallel to the first axis. The assembling assembly includes main body and assembling protrusion. The assembling protrusion protrudes from the main body and in the through slot so as to be restricted in the restricting section or released from the releasing section. When the assembling protrusion is located in the restricting section, and the restricting protrusion is located in the through slot, the assembling protrusion is restricted to be in the restricting section so that the assembling assembly is fixed to the frame.

Abstract: An automatic range finding method is applied to measure a distance between a stereo camera and a reference plane. The automatic range finding method includes acquiring a disparity-map video by the stereo camera facing the reference plane, analyzing the disparity-map video to generate a depth histogram, selecting a pixel group having an amount greater than a threshold from the depth histogram, calculating the distance between the stereo camera and the reference plane by weight transformation of the pixel group, and applying a coarse-to-fine computation for the disparity-map video.

Abstract: A surveillance system including at least one image capture device and a processor, and a surveillance method are provided. The image capture device is coupled to the processor and captures surveillance images. The processor analyzes the correlation between multiple on site data corresponding to the surveillance images and event information. Each on site data includes time information and detail information. Therefore, the processor determines that the event information is more relevant to the surveillance image corresponding to the detail information having a higher occurrence frequency in the duration of the event information.

Abstract: A light source assembly comprises a base body and at least one light source module. The base body comprises a first and a second bearing base connected to each other. The first bearing base is configured for an image capture module to be disposed thereon. The second bearing base is located on the periphery of the first bearing base. The at least one light source module is slidably disposed on the second bearing base, and movable toward and away from the first bearing base. The at least one light source module forms an adjustable space. The adjustable space is configured for receiving the image capture module. The first bearing base has a first bearing surface configured for the image capture module to be disposed thereon. A sliding direction of the at least one light source module is not parallel to a normal direction of the first bearing surface.

Abstract: A lens fixing mechanism includes a lens base having a hollow structure and a breach structure formed on the hollow structure and a lens clamp. A ring portion of the lens clamp has an opening and a protruding structure. Two sheets extend outwardly from the opening. The protruding structure protrudes from a periphery toward a center of the ring portion. When the ring portion sleeves the hollow structure to insert the protruding structure into the breach structure and a lens module is inserted into the hollow structure, the sheets are connected to each other to pack the ring portion to contract inwardly, so as to make the protruding structure pass through the breach structure for clamping the lens module and make a portion of the periphery of the ring portion except the protruding structure to clamp a portion of a periphery of the hollow structure except the breach structure.

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 video processing method and a video processing system are provided. The video processing method is applied to a rotary video capturing device. The video processing method includes the following steps. First, at least one video frame corresponding to at least one piece of field-of-view (FOV) information is received, and a plurality of first coordinates corresponding to a plurality of first pixels of the at least one video frame is obtained. Coordinate transformation procedure is performed on the first coordinates according to the at least one piece of FOV information to obtain a plurality of second coordinates. A plurality of second pixels in a panoramic background image corresponding to the second coordinates is obtained. The first pixels are compared with the second pixels to determine whether the first pixels belong to a foreground or a background, to output comparison results.

Abstract: An adjusting seat includes a base, an adjustment unit and a worm gear. The adjusting seat has two supporting portions. The adjustment unit includes an assembly portion, two extending portions and a teeth portion. The assembly portion includes a first surface and a second surface. The two extension portions protrude from the first surface of the assembly portion so as to form an accommodation space with the assembly portion. The two extension portions are pivoted on the two support portions, respectively. The teeth portion is located on the second surface. The worm gear is pivoted on the base and meshed with the teeth portion, when the worm gear is rotated relative to the base. The teeth portion is rotated according to a rotation of the worm gear so as to drive the adjustment unit to simultaneously rotate relative to the base.

Abstract: A light compensating system in accordance with this invention comprises a plurality of light emitting devices, an image capturing device, and a processing device. The processing device is respectively coupled to the plurality of light emitting devices and the image capturing device. Each light emitting device is used for emitting light to illuminate a certain area in space. The image capturing device is used for capturing a first image, which can be defined as a plurality of image blocks. Each image block is affected by the light from at least one corresponding light emitting device. The processing device is used for analyzing a brightness value of at least one of the plurality image block and adjusting at least one light emitting device corresponding to the analyzed image block based on the brightness value.

Abstract: A lighting device includes a light source, a driving module, a sensing module, and a control module. The driving module is configured to drive the light source. The sensing module is configured to obtain a brightness value corresponding to the environmental scene. The control module is configured to control the driving module to use a first current to drive the light source, control the sensing module to obtain a first brightness value, control, when the first brightness value is less than a reference brightness value, the driving module to use a second current to drive the light source, control the sensing module to obtain a second brightness value, the second current being greater than the first current by a predetermined amplitude value, compare the second brightness value with the first brightness value, determine that the light source is in a thermal attenuation state or an optical attenuation state.

Abstract: A method of searching an image, which is disclosed in the present invention, includes selecting a first timing and a second timing to generate a first period, obtaining a plurality of first images from a first video streaming within the first period, and setting a second period according to at least one first image so as to obtain a plurality of second images from the first video streaming within the second period. The method of searching the image further includes simultaneously displaying a plurality of third image from a second video streaming within the second period, enlarging a selected image of the second images or the third images, and simultaneously enlarging another image that is captured at the same time as the time when the enlarging selected image is captured. The two enlarging images respectively belong to the first video streaming and the second video streaming.

Abstract: An image calibrating method for stitching images includes calculating contrast values of a plurality of images, and comparing the contrast values to set the image with maximal contrast value as a reference image; others of the plurality of images are set as target images. The image calibrating method further includes calculating cumulative distribution functions of the reference image and the target images respectively, and obtaining a transform function according to the cumulative distribution functions of the reference image and the target images for pixel adjustment of the target images. Further, a camera with an image calibrating function and a related image processing system are disclosed in the present invention.

Abstract: An image adjusting method capable of varying scaling ratios according to different regions of an image includes setting a first ROI (region of interest) circle on the image, acquiring a center of the first ROI circle to be a first reference point for setting at least one first bridging region circle, and utilizing a first scaling ratio, a second scaling ratio and a third scaling ratio to respectively adjust pixels of the first ROI circle, pixels between the first bridging region circle and the first ROI circle, and pixels out of the first bridging region circle. Dimension of the first bridging region circle is greater than dimension of the first ROI circle, and the first scaling ratio and the third scaling ratio are greater than the second scaling ratio. Further, the foresaid image adjusting method is applied to a camera and a related image processing system with image adjusting function.