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US 8,570,394 B1Granted
Systems, methods, and mediums for adjusting an exposure of an image using a histogram
AssigneeIntellectual Ventures Fund 79 LLC
InventorJoon Maeng
Life of this patent
Estimating the term…
Abstract
The present disclosure describes systems, methods, and mediums for adjusting an exposure of a digital image using a histogram. The systems, methods, and mediums may include generating, by a computing device, a histogram associated with plurality of pixels in an image and enabling adjustment of the histogram to generate an adjusted histogram. The systems, methods, and mediums may further include generating, by the computing device, at least one adjusted control setting by adjusting at least one control setting in response to generation of the adjusted histogram and capturing the image in a memory device in response to generating the at least one adjusted control setting.
Claims39
A method, comprising:
- generating, by a computing device in a portable imaging device, a histogram comprising a first graph of input luminance values on an x-axis and output luminance values on a y-axis overlaid on a second graph of initial luminance values on the x-axis and a number of pixels on the y-axis associated with a plurality of pixels in an image prior to storage of the image in a memory device by activating a shutter switch;
- enabling adjustment of the second graph by adjusting the first graph;
- obtaining at least one target value from the adjusted second graph;
- generating, by the computing device, at least one control setting corresponding to at least one setting of the portable imaging device using the at least one target value;
- and
- capturing the image in the memory device using the at least one control setting by activating the shutter switch;
- wherein a body of the portable imaging device is configured to house the computing device or the memory device.
4 more elements
A method, comprising:
- generating, by a computing device in a portable imaging device, a histogram associated with a plurality of pixels in an image prior to storage of the image in a memory device by activating a shutter switch;
- enabling adjustment of the histogram to generate an adjusted histogram;
- obtaining at least one target value from the adjusted histogram;
- generating, by the computing device, at least one adjusted control setting by adjusting at least one control setting configured to control a corresponding at least one setting of the portable imaging device using the at least one target value;
- and
- capturing the image in the memory device using the at least one adjusted control setting by activating the shutter switch;
- wherein a body of the portable imaging device is configured to house the computing device or the memory device;
- wherein the histogram comprises a first graph overlaid on a second graph;
- wherein the first graph represents input luminance values on an x-axis and output luminance values on a y-axis;
- wherein the second graph represents input luminance values on the x-axis and a frequency of pixels on the y-axis;
- wherein enabling adjustment of the histogram to generate the adjusted histogram further comprises:
- dividing the histogram into a plurality of regions;
- enabling selection of one of the plurality of regions;
- enabling adjustment of the first graph in the selected one of the plurality of regions;
- and
- generating the at least one adjusted control setting based at least in part on the adjustment of the first graph.
13 more elements
An apparatus, comprising:
- an image computing device configured to:
- generate a histogram comprising a first graph of input luminance values on an x-axis and output luminance values on a y-axis overlaid on a second graph of initial luminance values on the x-axis and a number of pixels on the y-axis associated with a plurality of pixels in an image prior to storage of the image in a memory device by activating a shutter switch;
- enable adjustment of the second graph by adjusting the first graph;
- obtain at least one target value from the adjusted second graph;
- and
- generate at least one control setting corresponding to at least one setting of the image computing device using the at least one target value;
- and
- an image sensor configured to capture the image in the memory device using the at least one control setting by activating the shutter switch.
5 more elements
A portable imaging device, comprising:
- a body configured to house:
- means for generating a histogram comprising a first graph of input luminance values on an x-axis and output luminance values on a y-axis overlaid on a second graph of initial luminance values on the x-axis and a number of pixels on the y-axis associated with a plurality of pixels in an image prior to storage of the image in a memory device in the portable imaging device;
- means for enabling adjustment of the second graph by adjusting the first graph;
- means for obtaining at least one target value from the second graph;
- means for generating at least one control setting corresponding at least one setting of the portable imaging device using the at least one target value;
- and
- means for capturing the image in the memory device by activating a shutter switch in response to generating the at least one adjusted control setting.
4 more elements
A computer readable storage device including executable instructions stored thereon that, when executed by a processing device, configure the processing device to perform operations comprising:
- generating a histogram comprising a first graph of input luminance values on an x-axis and output luminance values on a y-axis overlaid on a second graph of initial luminance values on the x-axis and a number of pixels on the y-axis associated with a plurality of pixels in an image prior to activating a shutter switch that stores the image in a memory device housed in a portable imaging device;
- enabling adjustment of the second graph by adjusting the first graph;
- and
- obtaining at least one target value from the second graph;
- generating at least one control setting configured to control the portable imaging device using the at least one target value;
- and
- capturing, by activating the shutter switch, the image via an image sensor using the at least one control setting.
4 more elements
Dependencies are inferred from the claim text.