Imaging Device and Method for Video Data Transmission Optimization
A device and method for the acquisition, processing and optimized transmission of video image data. The display output of an electronic viewing device is split by means of a beam-splitting element. A split portion of the image is detected by a detector and its output digitized. Regions of interest in the split image may be identified by eye-tracking or image saliency processing means to define salient regions in the split image. The salient regions in the split image are transmitted to a remote receiver at a higher resolution than the non-salient regions in the scene whereby video transmission bandwidth is reduced and optimized.
1 . A device for video data transmission representative of a display output image of an electronic viewing system comprising:
a beam-splitter element for providing a first beam-splitter output and a second beam-splitter output from a display output image of an electronic viewing system,
detector means for converting the second beam-splitter output into one or more electrical signals representative of the second beam-splitter output,
signal digitizing means for converting the electrical signals into one or more digital values, and,
data transmission means for transmitting the digital values to a predetermined data receiver.
2 . The device of claim 1 coupled between an electronic viewing system display output and a user eyepiece of the electronic viewing system.
3 . The device of claim 2 wherein the eyepiece further comprises eye-tracking means configured to measure the position of the eye of a user to sense and identify one or more user-fixation points within the second beam-splitter output to define one or more saliency regions.
4 . The device of claim 2 further comprising electronic image saliency processing means configured to identify one or more saliency regions in the second beam-splitter output using one or more predefined image data characteristics.
5 . The device of claim 3 wherein the data transmission means is configured to transmit digital values representative of the saliency regions at a predetermined first data transmission rate and to transmit digital values that are representative of a non-saliency region at a predetermined second data transmission rate.
6 . The device of claim 4 wherein the data transmission means is configured to transmit digital values representative of the saliency regions at a predetermined first data transmission rate and to transmit digital values that are representative of a non-saliency region at a predetermined second data transmission rate.
7 . A method for optimizing transmission bandwidth of data representative of an output image of an electronic viewing system comprised of the steps of:
providing a display output image of an electronic viewing device,
splitting the display output image into a first beam-splitter output and a second beam-splitter output using a beam-splitter element,
detecting and converting the second beam-splitter output into one or more electrical signals representative of the second beam splitter output,
digitizing the electrical signals into one or more digital values, and,
transmitting the digital values to a predetermined data receiver.
8 . The method of claim 7 further comprising the step of measuring the position of the eye of a user to identify one or more user-fixation points to define one or more saliency regions in the second beam-splitter output.
9 . The method of claim 7 further comprises the step of electronically processing the digital signals to identify one or more saliency regions in the second beam-splitter output using one or more predefined image data characteristics.
10 . The method of claim 8 further comprising the step of transmitting digital values representative of the saliency regions at a predetermined first data transmission rate and transmitting digital values that are representative of a non-saliency region at a predetermined second data transmission rate to a predetermined data receiver.
11 . The method of claim 9 further comprising the step of transmitting digital values representative of the saliency regions at a predetermined first data transmission rate and transmitting digital values that are representative of a non-saliency region at a predetermined second data transmission rate to a predetermined data receiver.