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US 7,746,396 B2Granted
Imaging device and method of creating image file
AssigneeNokia Corporation
InventorsSami Mikkonen, Jaakko Kylmänen
Life of this patent
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Abstract
A method of creating an image file in an imaging device, and an imaging device are provided. The method comprises providing an image sensor comprising pixels with an infrared filter arrangement so that some of the pixels of the sensor may be exposed to all wavelengths and some of the pixels of the sensor are blocked from infrared wavelengths. The pixels of the sensor that may be exposed to all wavelengths are utilized when taking an infrared image and the pixels of the sensor that are blocked from infrared wavelengths are utilized when taking a normal image.
Claims18
A device comprising:
- an image sensing arrangement arranged to produce an image including
- a lens,
- an image sensor comprising pixels,
- an infrared filter arrangement in front of the image sensor so that some of the pixels of the sensor are exposed to all wavelengths and some of the pixels of the sensor are blocked from infrared wavelengths such that the image sensing arrangement is configured to form an infrared image by utilizing the pixels of the image sensor that may be exposed to all wavelengths and form an image using visible light by utilizing the pixels of the image sensor that are blocked from infrared wavelengths,
- wherein the pixels of the image sensor are grouped into 2×2 pixel subarrays and every pixel in every other subarray is blocked from infrared wavelengths, and
- a memory for storing infrared images and images formed using visible light.
3 more elements
A method comprising:
- providing an image sensor comprising pixels with an infrared filter arrangement so that some of the pixels of the sensor may be exposed to all wavelengths and some of the pixels of the sensor are blocked from infrared wavelengths, wherein the pixels of the image sensor are grouped into 2×2 pixel subarrays and every pixel in every other subarray is blocked from infrared wavelengths,
- utilizing the pixels of the sensor that may be exposed to all wavelengths when taking an infrared image,
- utilizing the pixels of the sensor that are blocked from infrared wavelengths when taking a normal image, and
- storing infrared images and normal images in a memory.
1 more element
Dependencies are inferred from the claim text.