Abstract: A computer-implemented flash artifact removal apparatus is described. The apparatus has at least a memory storing a flash image depicting a person's face captured in the presence of a flash illumination, and a non-flash image depicting the person's face captured without flash illumination. A plurality of pixels in the flash image comprise artifacts as a result of flash light reflecting from one or more eyes of the person. The apparatus has a flash artifact removal component which corrects the flash image by replacing at least some of the plurality of pixels in the flash image with pixels computed from at least the non-flash image. The flash artifact removal component is configured to detect edges of features of the one or more eyes in the non-flash image and to detect the plurality of pixels to be replaced in the flash image on the basis of the detected edges.

Abstract: In various examples there is an image combiner comprising a memory storing two or more frames being images depicting the same scene; and at least one processor. The memory holds instructions executable by the processor to select at least one of the frames and designate it as a reference frame and to designate the other frames as target frames. The instructions align the target frames to the reference frame and compute an output image by combining the reference frame and the aligned target frames. The process of selecting the reference frame comprises any one or more of: local analysis of characteristics of the frames, face detection, smile detection, object detection, computing signal to noise ratio of individual frames, use of sensor data from at least one non-camera sensor.

Abstract: A computer-implemented flash artifact removal apparatus is described. The apparatus has at least a memory storing a flash image depicting a person's face captured in the presence of a flash illumination, and a non-flash image depicting the person's face captured without flash illumination. A plurality of pixels in the flash image comprise artifacts as a result of flash light reflecting from one or more eyes of the person. The apparatus has a flash artifact removal component which corrects the flash image by replacing at least some of the plurality of pixels in the flash image with pixels computed from at least the non-flash image. The flash artifact removal component is configured to detect edges of features of the one or more eyes in the non-flash image and to detect the plurality of pixels to be replaced in the flash image on the basis of the detected edges.

Abstract: In various examples there is an image combiner comprising a memory storing two or more frames being images depicting the same scene; and at least one processor. The memory holds instructions executable by the processor to select at least one of the frames and designate it as a reference frame and to designate the other frames as target frames. The instructions align the target frames to the reference frame and compute an output image by combining the reference frame and the aligned target frames. The process of selecting the reference frame comprises any one or more of: local analysis of characteristics of the frames, face detection, smile detection, object detection, computing signal to noise ratio of individual frames, use of sensor data from at least one non-camera sensor.

Abstract: An image sensor system comprises a plurality of image sensing pixels which are arranged in lines. Control circuitry in the image sensor system is configured, when capturing a single image, to set an exposure time for the image sensing pixels in a line such that a first group of pixels in the line has a first exposure time and a second group of pixels in the same line has a second exposure time.