Region of interest table
AssigneeCarl Zeiss Meditec AG
InventorsMichael Doyle, Keith E. O'Hara, Csaba Farkas
Life of this patent
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Abstract
A camera capable of quickly updating a region of interest (ROI) in its sensor array is provided. The camera is configured to image individual scan lines of a scan imager created as a scan beam is scanned across a subject. A different ROI is defined for each scan line to be imaged. To achieve this, a table of ROI-defining entries is loaded into the camera prior to imaging the scan lines. The ROI-defining entries are used to update the sensor's ROI during the camera's Frame-Overhead-Time. In this manner, the ROI is changed in between the imaging of consecutive scans lines.
Claims21
A camera comprising:
- an image sensor array;
- a region-of-interest (ROI) definition record that defines a region of interest within the image sensor array;
- and
- control circuitry implementing the following operations:
- (i) an image capture sequence, including:
- initiating exposure of the sensor array to image the defined region of interest in response to a capture-start signal;
- terminating the exposure of the sensor array in response to a capture-stop signal;
- reading out image data of the defined region of interest;
- (ii) updating the ROI-definition record during the execution of the image capture sequence;
- and
- (iii) repeating steps (i) and (ii) a plurality of times, each time imaging a defined region of interest based on the ROI-definition record updated during the previous image capture sequence.
A method for controlling a camera, comprising:
- defining a region-of-interest (ROI) in a sensor array of the camera in accordance with an ROI-definition record;
- (i) executing an image capture sequence, including:
- initiating exposure of the sensor array to image the defined ROI in response to a capture-start signal;
- terminating the exposure of the sensor array in response to a capture-stop signal;
- reading out the captured image data of the ROI;
- (ii) updating the ROI-definition record during the execution of the image capture sequence, and
- (iii) repeating steps (i) and (ii) a plurality of times, each time imaging a defined ROI based on the ROI-definition record updated during the previous image capture sequence.
Dependencies are inferred from the claim text.