Computationally enhanced image recognition device
AssigneeThe United States of America as represented by the Secretary of the Air Force
InventorsDaniel W. Repperger, Alan R. Pinkus
Life of this patent
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Abstract
A device is described in which a visual image can be enhanced to better recognize different objects that appear in a picture. Means are provided for an operator to manipulate a visual image by adjusting darkness levels within each primary color to embellish the recognition of distinct objects which may appear in the visual rendering. The device may be implemented as a ground-based system where the operator can adjust the algorithm to manipulate the darkness levels of a certain number, N, of pixels. A second implementation can be achieved in a helmet mounted display or glasses donned by an operator.
Claims14
An image enhancement device comprising:
- visual data of a desired object within a compressed image;
- a central processing unit for receiving said visual data;
- a plurality of histograms, generated by said central processing unit, of frequency of pixels versus darkness level within each primary color red, blue and green of said visual data;
- a parabolic template constructed by said central processing unit with the vertex of the parabola appearing at the mean distribution of the total area under the histogram curve;
- means for overlaying a true histogram from said visual data and said parabolic template;
- a spatial gradient of all candidate pixels generated by said central processing unit;
- N number of pixels with maximum gradients moved through operator adjustment;
- and
- an output signal of an enhanced visual image of said desired object transferred from said central processing unit to said operator.
An image enhancement device comprising:
- visual data of a desired object within a compressed image using multi-spectral sensors from an operator wearing a head-mounted display;
- a central processing unit for receiving said visual data;
- a plurality of histograms, generated by said central processing unit, of frequency of pixels versus darkness level within each primary color red, blue and green and means for selecting the most highly uncertain color;
- a parabolic template constructed by said central processing unit with the vertex of the parabola appearing at the mean distribution of the total area under the histogram curve;
- means for overlaying a true histogram from said visual data and said parabolic template comprising:
- a darkness level threshold of 0.5 for a darkness level varying between 0 and 1;
- means for first setting a darkness level to zero when, for each pixel, the darkness level is less than or equal to said threshold;
- and
- means for second setting a darkness level to one, when for each pixel, the darkness level is greater than the threshold;
- a spatial gradient of all candidate pixels generated by said central processing unit;
- N number of pixels with maximum gradients moved through operator adjustment knob manipulation;
- an output signal of an enhanced visual image of said desired object transferred from said central processing unit to said operator.
Dependencies are inferred from the claim text.