Visual image scoring

Abstract

An image-based system and process of paper target scoring, and paper targets for use therewith, are disclosed. The system and process utilize functions that accumulate accuracy values based upon presumptions supplied to the present invention based upon the characteristics of bullet holes within paper target prior to any center point analysis. Subpixel analysis of images may heighten the accuracy of the scoring. The paper targets possess visual attributes adapted to permit scoring of the paper targets to be more rapid, facile, accurate, and secure.

1 . A process of measuring a high-velocity puncture in a substantially planar object, said process comprising:
 disseminating planar target sheets from a predefined set of stored template target sheet images bearing a target with a space color and bull color, target sheet information, and reference data;   transmitting a captured image of at least one target sheet bearing at least one high-velocity puncture to a processor;   calibrating said captured image of said punctured target sheet by comparing said captured image to said reference data of a correlating stored template target sheet image to produce correction data;   extracting from said punctured target sheet puncture edge data characterizing color data related to said puncture and the periphery of at least two of said punctures;   calculating from said captured image a standard puncture dimension based on the puncture edge data of at least two of said punctures; and   identifying a likely puncture center point for a reviewed puncture from said captured image as a function of said correction data, puncture edge data from said reviewed puncture, and a 2-D index of puncture accumulation values from said standard puncture dimension repeatedly overlayed according to said puncture edge data of said reviewed puncture.   
     
     
         2 . The process of  claim 1  further comprising adjusting said likely puncture center point based on neighboring index values to produce an adjusted puncture center point. 
     
     
         3 . The process of  claim 2  further comprising extracting from said punctured target sheet bull edge data characterizing color data related to said bull and the periphery of at least two of said bulls. 
     
     
         4 . The process of  claim 3  further comprising calculating from said captured image a standard bull dimension based on the bull edge data of at least two of said bulls. 
     
     
         5 . The process of  claim 4  further comprising identifying a likely bull center point of a reviewed bull as a function of said correction data, bull edge data from said reviewed bull, and a 2-D index of bull accumulation values from said standard bull dimension repeatedly overlayed according to said bull edge data. 
     
     
         6 . The process of  claim 5  further comprising adjusting said likely bull center point based on neighboring bull index values to produce an adjusted bull center point. 
     
     
         7 . The process of  claim 6  further comprising determining a score value based on said modified puncture center point and said adjusted bull center point. 
     
     
         8 . The process of  claim 7  further comprising presenting a reliability score derived from said 2-D index of puncture accumulation. 
     
     
         9 . The process of  claim 3  further comprising depicting a map overlay comprising: said captured image of at least one target sheet bearing at least one high-velocity puncture; a graphical overlay, superimposed upon said captured image, bearing a positional depiction of said puncture edge data and said bull edge data. 
     
     
         10 . The process of  claim 1  wherein said disseminating step includes disseminating planar target sheets from said predefined set of stored template target sheet images bearing said target with a single space color and single bull color with a uniform fill complexion. 
     
     
         11 . The process of  claim 10  wherein said disseminating step includes disseminating planar target sheets from said predefined set of stored template target sheet images bearing said target with a circular bull. 
     
     
         12 . The process of  claim 11  wherein said disseminating step includes disseminating planar target sheets with reference data comprising at least one reference line and reference point. 
     
     
         13 . The process of  claim 12  wherein said disseminating step includes disseminating planar target sheets with reference data comprising at least two reference lines and reference point; and said transmitting step includes transmitting said captured image of at least one target sheet bearing at least one high-velocity puncture to a processor from a digital camera. 
     
     
         14 . The process of  claim 1  wherein said disseminating step includes disseminating planar target sheets with target sheet information comprising an individual target sheet identifier and a target sheet security code derived from the target sheet identifier. 
     
     
         15 . A target sheet suited to rapid measurement of a high-velocity puncture, said target sheet comprising:
 a substantially planar target sheet body with a view surface;   a uniformly-colored space on said view surface;   a circular bull, within said space, uniformly filled with a single bull color; and   reference data, on said body, comprising a reference line and a predefined reference point.   
     
     
         16 . The target sheet of  claim 15  further comprising a target scheme identifier, on said body, adapted to communicate to an electronic reader information that identifies position data of said bull and reference data. 
     
     
         17 . The target sheet of  claim 16  further comprising an individual identification number on said body. 
     
     
         18 . The target sheet of  claim 16  wherein said reference data includes at least two reference lines. 
     
     
         19 . A system measuring a high-velocity puncture in a substantially planar object, said system comprising:
 an arithmetic logic unit (ALU);   persistent storage, in signaled communication with said ALU, bearing a set of stored template target sheet images bearing a target with a space color and bull color, target sheet information, and reference data;   a printer, in signaled communication with said ALU, adapted to print a substantially planar target sheet from said set of stored template target sheet images, said target sheet including: a uniformly-colored space on a view surface, a circular bull, within said space, with a uniformly filled single bull color; and reference data with a reference line and a predefined reference point; and   an image scanning device, in signaled communication with said ALU, adapted to accept said target sheet.   
     
     
         20 . The system of  claim 19  further comprising:
 a transmitter function for transmitting a captured image of at least one target sheet bearing at least one high-velocity puncture to said ALU; 
 a calibration function for calibrating said captured image of said punctured target sheet by comparing said captured image to said reference data of a correlating stored template target sheet image to produce correction data; 
 an extraction function for extracting from said punctured target sheet puncture edge data characterizing color data related to said puncture and the periphery of at least two of said punctures; 
 a calculator function for collecting from said captured image a standard puncture dimension based on the puncture edge data of at least two of said punctures; and 
 an identification function for identifying a likely puncture center point for a reviewed puncture from said captured image as a function of said correction data, puncture edge data from said reviewed puncture, and a 2-D index of puncture accumulation values from said standard puncture dimension repeatedly overlayed according to said puncture edge data of said reviewed puncture. 
 
     
     
         21 . The system of  claim 20  further comprising an adjusting function for adjusting said likely puncture center point based on neighboring index values to produce an adjusted puncture center point. 
     
     
         22 . The system of  claim 21  further comprising:
 a bull extraction function for extracting from said punctured target sheet bull edge data characterizing color data related to said bull and the periphery of at least two of said bulls; 
 a bull calculator function for collecting from said captured image a standard bull dimension based on the bull edge data of at least two of said bulls; 
 a bull identification function for identifying a likely bull center point of a reviewed bull as a function of said correction data, bull edge data from said reviewed bull, and a 2-D index of bull accumulation values from said standard bull dimension repeatedly overlayed according to said bull edge data; and 
 a bull adjustment function for adjusting said likely bull center point based on neighboring bull index values to produce an adjusted bull center point.