Remote controller
There is provided an optical pointing system including at least one reference beacon, an image sensor, a storage unit and a processing unit. The image sensor is configured to capture an image frame containing a beacon image associated with the at least one reference beacon. The storage unit is configured to save image data of at least one object image in the image frame. The processing unit is configured to sequentially process every pixel of the image frame for identifying the object image and real-timely remove or merge the image data, saved in the storage unit, associated with two object images within a pixel range of the image frame thereby reducing the used memory space.
1. A remote controller, comprising:
an image sensor configured to capture an image frame containing at least one object image;
a storage unit configured to store image data of the at least one object image in the image frame; and
a processing unit configured to
sequentially process every pixel of the image frame captured within a scan period for identifying the at least one object image, and
when a plurality of object images simultaneously appear within a combinable range, which is determined around the at least one object image, of the image frame, merge image data, which is stored in the storage unit, associated with the plurality of object images within the combinable range.
2. The remote controller as claimed in claim 1 , wherein when an intensity of every pixel of a pixel region is larger than or equal to an intensity threshold and at least one of
(i) a pixel area of the pixel region being larger than or equal to an area threshold, and
(ii) the pixel region matching a predetermined feature, is true,
the processing unit is configured to identify the pixel region as the at least one object image.
3. The remote controller as claimed in claim 1 , wherein the combinable range is a fixed predetermined pixel range.
4. The remote controller as claimed in claim 1 , wherein the combinable range is determined according to system parameters, which are selected from the group consisting of a disposed distance between reference beacons, an image capturing angle of the image sensor and an operable distance.
5. The remote controller as claimed in claim 1 , wherein the combinable range extends outward from a center, a gravity center or an edge of the at least one object image.
6. The remote controller as claimed in claim 1 , wherein the combinable range is a pixel region extending outward from an edge of the at least one object image to a pixel area smaller than the image frame.
7. The remote controller as claimed in claim 1 , wherein the plurality of object images are separated from each other in the image frame.
8. The remote controller as claimed in claim 1 , wherein the at least one object image comprises a reference beacon image and an ambient light image.