Dual aperture zoom digital camera
A dual-aperture zoom digital camera operable in both still and video modes. The camera includes Wide and Tele imaging sections with respective lens/sensor combinations and image signal processors and a camera controller operatively coupled to the Wide and Tele imaging sections. The Wide and Tele imaging sections provide respective image data. The controller is configured to combine in still mode at least some of the Wide and Tele image data to provide a fused output image from a particular point of view, and to provide without fusion continuous zoom video mode output images, each output image having a given output resolution, wherein the video mode output images are provided with a smooth transition when switching between a lower zoom factor (ZF) value and a higher ZF value or vice versa, and wherein at the lower ZF the output resolution is determined by the Wide sensor while at the higher ZF value the output resolution is determined by the Tele sensor.
1. A zoom digital camera, comprising:
a Wide imaging section that includes a fixed focal length Wide lens with a Wide field of view (FOV), a Wide sensor and a Wide image signal processor (ISP), the Wide imaging section operative to provide Wide image data of an object or scene;
a Tele imaging section that includes a fixed focal length Tele lens with a Tele FOV that is narrower than the Wide FOV, a Tele sensor and a Tele ISP, the Tele imaging section operative to provide Tele image data of the object or scene; and
a camera controller operatively coupled to the Wide and Tele imaging sections and configured to combine in still mode at least some of the Wide and Tele image data to provide an output image of the object or scene and to provide in video mode continuous zoom video output images of the object or scene, wherein the video output images are provided with a smooth transition configured to reduce a parallax-induced jump effect in a region of interest (ROI) when switching between a lower zoom factor (ZF) value using the Wide imaging section and a higher ZF value using the Tele imaging section or vice versa, and wherein the smooth transition includes positioning matching achieved only in the ROI having the parallax-induced jump effect.
2. The zoom digital camera of claim 1 , wherein the smooth transition is further achieved by at least one other matching operation performed between the Wide image data and Tele image data both in the ROI and outside the ROI.
3. The zoom digital camera of claim 2 , wherein the at least one other matching operation includes matching of color.
4. The zoom digital camera of claim 2 , wherein the at least one other matching operation includes matching of scale.
5. The zoom digital camera of claim 2 , wherein the at least one other matching operation includes matching of brightness.
6. The zoom digital camera of claim 1 , wherein the positioning matching is done by image registration between Wide and Tele image data.
7. The zoom digital camera of claim 1 , wherein the ROI is a region on which both imaging sections are focused.