Image obtaining method, apparatus, and computer program
AssigneeHanwha Vision Co., Ltd.
InventorsDae Bong Kim, Jung Kyung Lee, Dong Jin Park, Young Sang Kwon
Life of this patent
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Abstract
An image obtaining method employed by an image obtaining apparatus including a filter for reducing light of a first wavelength for focus control according to an embodiment of the inventive concept includes selecting a filter corresponding to a brightness of a photographing area from among one or more filters, wherein the one or more filters include a second filter that reduces light of the first wavelength; adjusting a focus based on light obtained from the photographing area to which the light of the first wavelength is irradiated; and obtaining an image using light obtained from the photographing area through a filter corresponding to the brightness.
Claims21
An image obtaining method employed by an image obtaining apparatus, the image obtaining method comprising:
- selecting a filter corresponding to a brightness of a photographing area from among a plurality of filters of the image obtaining apparatus, wherein the plurality of filters includes:
- a first filter configured to reduce light of a first wavelength and light of a second wavelength, wherein the first wavelength is greater than the second wavelength;
- and
- a second filter configured to reduce the light of the first wavelength and pass the second wavelength;
- and
- a third filter configured to pass the first wavelength and the second wavelength;
- adjusting focus based on light obtained from the photographing area to which the light of the first wavelength is irradiated;
- and
- obtaining an image using light obtained from the photographing area through the filter, corresponding to the brightness, that is selected,
- wherein the selecting of the filter comprises selecting one from among the first filter, the second filter, and the third filter based on comparing the brightness of the photographing area with at least two brightness thresholds.
An image obtaining apparatus comprising:
- a light source configured to radiate light of a first wavelength to a photographing area;
- an image sensor configured to convert light incident from the photographing area into an electrical signal;
- a filter group comprising a plurality of filters configured to be disposed between the incident light and the image sensor, the plurality of filters comprising:
- a first filter configured to reduce light of the first wavelength and light of a second wavelength, wherein the first wavelength is greater than the second wavelength;
- and
- a second filter configured to reduce the light of the first wavelength and pass the second wavelength;
- and
- a third filter configured to pass the first wavelength and the second wavelength;
- and
- at least one processor configured to select one from among the plurality of filters included in the filter group as a filter according to a brightness of the photographing area, adjust a focus based on light obtained by irradiation of light of the first wavelength onto the photographing area, and obtain an image using light obtained through the selected filter,
- wherein the at least one processor is configured to select one from among the first filter, the second filter, and the third filter based on comparing the brightness of the photographing area with at least two brightness thresholds.
Dependencies are inferred from the claim text.