Detection of encoded signals and icons
The present disclosure relates to signal decoding and icon (e.g., a logo, shape, icon, etc.) detection. In some implementations, a first response is provided upon signal decoding but no icon detection within first captured image data, and a second response is provided upon signal decoding and icon detection within the first captured image data. Other aspects, combinations and implementations are described as well.
1. A method comprising:
obtaining image data associated with one or more plural image frames, the one or more image frames depicting a physical object, the plural image frames captured with a camera;
using one or more processors, first analyzing the image data, in which said first analyzing analyzes image data to detect presence of an icon;
and once the icon is detected, and using the one or more processors, second analyzing the image data at or around a spatial location associated with the detected icon to decode a signal encoded within the image data, and inclusively expanding the spatial location from two to four inches associated with the detected icon since the second analyzing does not decode the signal, and analyzing image data associated with the expanded spatial location to decode the signal encoded within the image data;
providing a first response when the presence of the icon is detected but the signal is not decoded; and
providing a second, different response when the icon is detected and the signal is decoded.
2. The method of claim 1 wherein the signal is encoded with digital watermarking.
3. The method of claim 1 wherein the signal carries a plural-bit payload, and the signal is encoded within or on the icon.
4. The method of claim 1 wherein the signal carries a plural-bit payload, and wherein the second, different response comprises providing access to remotely located information associated with the detected icon, while preventing access to the plural-bit payload by a smartphone operation not associated with the providing access.
5. The method of claim 1 wherein the signal carries a plural-bit payload, and the signal is encoded in an area surrounding the detected icon, the area comprising 1/300 to 2 inches squared on all sides of the icon.
6. The method of claim 1 in which the second analyzing comprises analyzing a subset of the image data at or around a spatial location associated with the detected icon to decode the signal encoded within the image data.
7. A non-transitory computer readable medium comprising instructions stored thereon that, when executed by one or more processors, cause the one or more processors to perform:
obtaining image data associated with one or more plural image frames, the one or more plural image frames depicting a physical object, the one or more plural image frames captured with a camera;
first analyzing the image data, in which said first analyzing analyzes image data to detect presence of an icon;
and once the icon is detected, second analyzing the image data at or around a spatial location associated with the detected icon to decode a signal encoded within the image data, and inclusively expanding the spatial location from two to four inches associated with the detected icon if the second analyzing does not decode the signal, and analyzing image data associated with the expanded spatial location to decode the signal encoded within the image data;
providing a first response when the presence of the icon is detected but the signal is not decoded; and
providing a second, different response when the icon is detected and the signal is decoded.
8. The non-transitory computer readable medium of claim 7 wherein the signal is encoded with digital watermarking.
9. The non-transitory computer readable medium of claim 7 wherein the signal carries a plural-bit payload, and the signal is encoded within or on the icon.
10. The non-transitory computer readable medium of claim 7 wherein the signal carries a plural-bit payload, and wherein the second, different response comprises providing access to remotely located information associated with the detected icon, while preventing access to the plural-bit payload by a smartphone operation not associated with the providing access.
11. The non-transitory computer readable medium of claim 7 wherein the signal carries a plural-bit payload, and the signal is encoded in an area surrounding the detected icon, the area comprising 1/300 to 2 inches squared on all sides of the icon.
12. The non-transitory computer readable medium of claim 7 in which the second analyzing comprises analyzing a subset of the image data at or around a spatial location associated with the detected icon to decode the signal encoded within the image data.
13. A smartphone comprising
a camera;
memory storing image data associated with one or more plural image frames, the one or more image frames depicting a physical object, the plural image frames captured with said camera;
one or more processors, configured for:
detecting presence of an icon within the image data;
and once the icon is detected, searching around a spatial location associated with the detected icon to decode a signal encoded within the image data, and inclusively expanding the spatial location from two to four inches associated with the detected icon if the signal encoded within the image data is not decoded, and searching image data associated with the expanded spatial location to decode the signal encoded within the image data;
generating a first response when the presence of the icon is detected but the signal is not decoded; and
generating a second, different response when the icon is detected and the signal is decoded.
14. The smartphone of claim 13 wherein the signal is encoded with digital watermarking.
15. The smartphone of claim 13 wherein the signal carries a plural-bit payload, and the signal is encoded within or on the detected icon.
16. The smartphone of claim 13 wherein the signal carries a plural-bit payload, and wherein the second, different response comprises providing access to remotely located information associated with the detected icon, while preventing access to the plural-bit payload by a smartphone operation not associated with the providing access.
17. The smartphone of claim 13 wherein the signal carries a plural-bit payload, and the signal is encoded in an area surrounding the icon, the area comprising 1/300 to 2 inches squared on all sides of the detected icon.
18. The smartphone of claim 13 in which the second analyzing comprises analyzing a subset of the image data at or around a spatial location associated with the detected icon to decode the signal encoded within the image data.