Method for generating plural information using camera to sense plural wave bandwidth and apparatus thereof

A method for generating an image in an electronic device, the method comprising:

• outputting first IR (infra-red) light of a first wave bandwidth by a first light emitter included in the electronic device and second IR light of a second wave bandwidth by a second light emitter included in the electronic device;
• in response to the first IR light and the second IR light being output:
• obtaining, by using a plurality of first pixels of an image sensor included in the electronic device, first pixel data of an external object from the first IR light and the second IR light reflected from the external object and
• obtaining, by using a plurality of second pixels of the image sensor, second pixel data of the external object from the second IR light reflected from the external object, wherein the image sensor comprises the plurality of first pixels for sensing the first IR light corresponding to the first wave bandwidth and the second IR light corresponding to the second wave bandwidth and the plurality of second pixels for sensing the second IR light corresponding to the second wave bandwidth,
• wherein the plurality of first pixels and the plurality of second pixels are arranged in a grid which alternates each of the first pixels and each of the second pixels, and
• wherein the second wave bandwidth is different than the first wave bandwidth;
• shifting the second pixel data corresponding to the plurality of second pixels of the image sensor by one pixel horizontally or vertically to correspond in position to first pixel data corresponding to the plurality of first pixels of the image sensor;
• generating first image data of the external object by using a difference between the first pixel data and the shifted second pixel data and by interpolating values in the first pixel data corresponding to positions of the plurality of first pixels to positions of the plurality of second pixels;
• generating second image data of the external object by binning the second pixel data corresponding to the plurality of second pixels of the image data;
• and
• transmitting the first image data and the second image data to an application processor through a designated interface, to generate authentication information based on the first image data and to generate depth information using the second image data.

An electronic device comprising:

• a first light emitter comprising first light emitting circuitry configured to output light of a first wave bandwidth;
• a second light emitter comprising second light emitting circuitry configured to output light of a second wave bandwidth, wherein the second wave bandwidth is different than the first wave bandwidth;
• a camera comprising a pixel array comprising a plurality of first pixels configured to transform the light of the first wave bandwidth and the second wave bandwidth to a first electric signal and a plurality of second pixels configured to transform the light of the second wave bandwidth to a second electric signal, and an image sensor comprising a plurality of filters mounted on at least part of the plurality of second pixels and configured to pass the light of the second wave bandwidth, wherein the plurality of first pixels and the plurality of second pixels are arranged in a grid including a plurality of rows adjacent to each other and a plurality of columns adjacent to each other, the first pixels and the second pixels alternate between the first and second pixels in each row of the plurality of rows and in each column of the plurality of columns;
• and
• a processor,
• wherein the processor is configured to control the electronic device to output the light of the first wave bandwidth using a first light source and to output the light of the second wave bandwidth using a second light source,
• to control the electronic device to obtain image data of an external object based on the first electrical signal and the second electrical signal received from the camera corresponding to first wave bandwidth light and the second wave bandwidth light reflected from the external object,
• to shift each second pixel data corresponding to the plurality of second pixels of the image data by one pixel horizontally or vertically to correspond in position to the plurality of first pixels of the image data,
• to generate first image data of the external object using a difference between the first pixel data and the shifted second pixel data corresponding in position to first pixel data, and
• to generate second image data of the external object using the second pixel data.