The present invention discloses a method for producing graphical indicators and interactive systems for utilizing the graphical indicators. On the surface of an object, visually negligible graphical indicators are provided. The graphical indicators and main information, i.e. text or pictures, co-exist on the surface of object. The graphical indicators do not interfere with the main information when the perception of human eyes are concerned. With the graphical indicators, further information other than the main information on the surface of object are carried. In addition to the main information on the surface of object, one is able to obtain additional information through an auxiliary electronic device or trigger an interactive operation.

Disclosed are various embodiments of a multi-scale fiducial. A multi-scale fiducial may have three or more scales, where the child fiducials are nested or otherwise linked by a relative position to the parent fiducials. Multi-scale fiducials may facilitate target identification and tracking at varying distances, potentially without the aid of a scale-invariant recognition algorithm. One application of multi-scale fiducials may involve target identification for autonomously controlled aerial vehicles.

In a system in which a first electronic device, a server, and a second electronic device wirelessly communicate with each other, the first electronic device may detect object information associated with at least one object from a video being captured and may transmit the object information to the server, the server may identify a location of the object based on the object information and may transmit service information associated with the location of the object to the second electronic device, and the second electronic device may provide the service information to a user.

In a system in which a first electronic device, a server, and a second electronic device wirelessly communicate with each other, the first electronic device may detect object information associated with at least one object from a video being captured and may transmit the object information to the server, the server may identify a location of the object based on the object information and may transmit service information associated with the location of the object to the second electronic device, and the second electronic device may provide the service information to a user.

In a system, mobile terminal and a reader are communicable with each other. In the mobile terminal, a terminal tilt state is detected by a detecting unit as a terminal environmental state, an information code is generated such that the detected terminal environmental state and predetermined information are recorded in the information code, and the generated information code is displayed on the screen of a display unit. In the reader, a reading surface tilt state corresponding to the terminal environmental state is detected by a detecting unit as a reading surface environmental state. When the reader reads the information code and the detected reading surface environmental state and the detected terminal environmental state show the same environmental state, the read predetermined information is used by a control unit to perform processing based on the predetermined information.

In a system, mobile terminal and a reader are communicable with each other. In the mobile terminal, a terminal tilt state is detected by a detecting unit as a terminal environmental state, an information code is generated such that the detected terminal environmental state and predetermined information are recorded in the information code, and the generated information code is displayed on the screen of a display unit. In the reader, a reading surface tilt state corresponding to the terminal environmental state is detected by a detecting unit as a reading surface environmental state. When the reader reads the information code and the detected reading surface environmental state and the detected terminal environmental state show the same environmental state, the read predetermined information is used by a control unit to perform processing based on the predetermined information.

Provided is a two-dimensional code display medium which displays a distinctive two-dimensional code that is readily noticeable by itself, as well as being easy for a person to visually determine whether or not the two-dimensional code is the person's desired code.

The two-dimensional code display medium according to the present invention is characterized by being provided with an information display surface having therein a display region for displaying a two-dimensional code, wherein the information display surface is square, and one side of the two-dimensional code and one side of the information display surface form an oblique angle therebetween. Further, the oblique angle is preferably 45 degrees.

An optically readable marker includes data to be extracted; and an identifier arranged to identify a location of the data to be extracted. The identifier includes a plurality of dots arranged in a set pattern, the dots being small compared to the size of the data to be extracted. The identifier may be used on a beverage container, and/or for augmented reality applications.

In a system in which a first electronic device, a server, and a second electronic device wirelessly communicate with each other, the first electronic device may detect object information associated with at least one object from a video being captured and may transmit the object information to the server, the server may identify a location of the object based on the object information and may transmit service information associated with the location of the object to the second electronic device, and the second electronic device may provide the service information to a user.

Disclosed are various embodiments involving use of a multi-scale fiducial by an autonomously controlled aerial vehicle. A first image at a first location is captured, and a first fiducial at a first scale of a multi-scale fiducial is recognized within the first image. The autonomously controlled aerial vehicle is piloted relative to the multi-scale fiducial based at least in part on information contained within the first fiducial. A second image at a second location is captured, and a second fiducial at a second scale of the multi-scale fiducial is recognized within the second image. An action is then performed based at least in part on information contained within the second fiducial.