System and method for robust estimation of state parameters from inferred readings in a sequence of images

1 . A system to improve the stability of inference for the state of a system parameter from a sequence of images of a measuring device with a digital display, the system comprising:

an image sensor configured to capture the sequence of images of the measuring device with the digital display;

at least one processor configured to process the sequence of images from the image sensor;

and at least one memory having stored thereon instructions that, when executed, cause the system to perform:

extracting digits from the images;

populating mathematical bins with the digits extracted from the images;

selecting at least one value that is most frequent based on population of the bins; and

outputting the selected at least one value as representative of one or more digits included in the captured sequence of images.

2 . The system as set forth in claim 1 wherein the bins are histogram bins.

3 . The system as set forth in claim 1 wherein the system is further caused to perform outputting selected values within at least one of a camera, augmented reality equipment, and a webcam.

4 . The system as set forth in claim 1 wherein the system is further caused to perform processing selected values using an exponential averaging filter to obtain results representing a display of digits on the digital display.

5 . The system as set forth in claim 4 wherein the system is further caused to perform outputting the results in association with outputting the selected at least one value as representative of one or more digits included in the captured sequence of images.

6 . A method which improves the stability of inference for the state of a system parameter from a sequence of images of a measuring device with a digital display, the method comprising:

capturing the sequence of images of the measuring device with the digital display using an image sensor;

extracting digits from the images using at least one processor configured to process the sequence of images from the image sensor;

populating mathematical bins with the digits extracted from the images using the at least one processor;

selecting at least one value that is most frequent based on population of the bins using the at least one processor; and

outputting the selected at least one value as representative of one or more digits included in the captured sequence of images such that the stability of inference for the state of the system parameter is improved.

7 . The method as set forth in claim 6 wherein the bins are histogram bins.

8 . The method as set forth in claim 6 further comprising outputting selected values.

9 . The method as set forth in claim 6 wherein selected values are processed using an exponential averaging filter to obtain results representing a display of digits on the digital display.

10 . The method as set forth in claim 9 further comprising outputting the results in association with outputting the selected at least one value as representative of one or more digits included in the captured sequence of images.

11 . A non-transitory computer readable medium having instructions stored thereon that, when executed by a processer, cause an apparatus to perform a method which improves the stability of inference for the state of a system parameter from a sequence of images of a measuring device with a digital display, the method comprising:

receiving, from an image sensor, the sequence of the measuring device with the digital display;

extracting digits from the images;

populating mathematical bins with the digits extracted from the images;

selecting at least one value that is most frequent based on population of the bins; and

outputting the selected at least one value as representative of one or more digits included in the sequence of images such that the stability of inference for the state of the system parameter is improved.

12 . The non-transitory computer readable medium as set forth in claim 11 wherein the apparatus is further caused to perform outputting selected values.

13 . The non-transitory computer readable medium as set forth in claim 11 wherein the apparatus is further caused to perform processing on selected values using an exponential averaging filter to obtain results representing a display of digits on the digital display.

14 . The non-transitory computer readable medium as set forth in claim 13 wherein the apparatus is further caused to perform outputting the results in association with outputting the selected at least one value as representative of one or more digits included in the captured sequence of images.