APPARATUS TO RECOGNIZE ILLUMINATION ENVIRONMENT OF VEHICLE AND CONTROL METHOD THEREOF
First Claim
1. An apparatus to recognize an illumination environment of a vehicle, comprising:
- an infrared illumination sensor to detect an infrared illumination amount emitted from the sun;
a camera to capture a road on which a vehicle drives; and
an illumination environment recognition unit which detects the infrared illumination amount by the infrared illumination sensor, receives a camera exposure time from the camera, receives double exposure images captured to have different exposure values by adjusting the exposure values of the camera, calculates a general illumination value based on the detected infrared illumination amount, the received camera exposure time, and an illumination value obtained through an image clustering analysis of the double exposure images, calculates a rate of change in the calculated general illumination value, and recognizes a current illumination environment as an illumination environment for each time section based on the calculated general illumination value and the rate of change in the general illumination value.
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Accused Products
Abstract
Disclosed herein are an apparatus to recognize an illumination environment of a vehicle and a control method thereof. The apparatus includes an infrared illumination sensor to detect an infrared illumination amount emitted from the sun, a camera, and an illumination environment recognition unit which detects the infrared illumination amount by the infrared illumination sensor, receives a camera exposure time from the camera, receives double exposure images captured to have different exposure values, calculates a general illumination value based on the detected infrared illumination amount, the received camera exposure time, and an illumination value obtained through an image clustering analysis of the double exposure images, calculates a rate of change in the calculated general illumination value, and recognizes a current illumination environment as an illumination environment for each time section based on the calculated general illumination value and the rate of change in the general illumination value.
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Citations
10 Claims
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1. An apparatus to recognize an illumination environment of a vehicle, comprising:
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an infrared illumination sensor to detect an infrared illumination amount emitted from the sun; a camera to capture a road on which a vehicle drives; and an illumination environment recognition unit which detects the infrared illumination amount by the infrared illumination sensor, receives a camera exposure time from the camera, receives double exposure images captured to have different exposure values by adjusting the exposure values of the camera, calculates a general illumination value based on the detected infrared illumination amount, the received camera exposure time, and an illumination value obtained through an image clustering analysis of the double exposure images, calculates a rate of change in the calculated general illumination value, and recognizes a current illumination environment as an illumination environment for each time section based on the calculated general illumination value and the rate of change in the general illumination value. - View Dependent Claims (2, 3, 4, 5)
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6. An apparatus to recognize an illumination environment of a vehicle, comprising:
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an infrared illumination sensor to detect an infrared illumination amount emitted from the sun; a camera to capture a road on which a vehicle drives; and an illumination environment recognition unit which detects the infrared illumination amount by the infrared illumination sensor, receives a camera exposure time from the camera, calculates a general illumination value based on the detected infrared illumination amount and the received camera exposure time, calculates a rate of change in the calculated general illumination value, and recognizes a current illumination environment as at least one of daytime, nighttime, twilight, and dawn based on the rate of change in the calculated general illumination value, wherein; when the general illumination value is equal to or more than a preset illumination value and the rate of change in the general illumination value is less than a preset rate of change, the illumination environment recognition unit determines the current illumination environment to be daytime; when the general illumination value is less than a preset illumination value and the rate of change in the general illumination value is less than a preset rate of change, the illumination environment recognition unit determines the current illumination environment to be nighttime; when the general illumination value gradually decreases and the rate of change in the general illumination value is equal to or more than a preset rate of change, the illumination environment recognition unit determines the illumination environment to be twilight; and when the general illumination value gradually increases and the rate of change in the general illumination value is equal to or more than a preset rate of change, the illumination environment recognition unit determines the illumination environment to be dawn.
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7. A method of recognizing an illumination environment of a vehicle, comprising:
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detecting an infrared illumination amount by an infrared illumination sensor to detect an infrared illumination amount emitted from the sun; receiving a camera exposure time from a camera to capture a road on which a vehicle drives; receiving double exposure images captured to have different exposure values by adjusting the exposure values of the camera; calculating a general illumination value based on the detected infrared illumination amount, the received camera exposure time, and an illumination value obtained through an image clustering analysis of the double exposure images; calculating a rate of change in the calculated general illumination value; and recognizing a current illumination environment as an illumination environment for each time section based on the calculated general illumination value and the rate of change in the general illumination value. - View Dependent Claims (8, 9, 10)
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Specification