Method for a 3-d projection printing system and system thereof

Abstract

The embodiment of the present invention provides a method for a 3-D projection printing system and a system thereof, more particularly to a system adopts both ways of look-up table and interpolation method to calibrate. The embodiment of the present invention provides a portable calibration fixture system and a flexible 3-D projection printing system in order to improve calibration precision, facilitate calibration and printing operations, increase printing effect and save cost.

What is claimed is: 
     
         1 . A method for a 3-D projection printing system comprising
 using a resulted projection look-up table to calibrate a plurality of sliced printing files, and then the plurality of calibrated sliced printing files being used to engage in a projection printing work, wherein the resulted projection look-up table is produced from a projected single second sample pattern.   
     
     
         2 . The method for the 3-D projection printing system according to  claim 1  further comprising the steps of:
 providing a light-uniform device to a calibration fixture system; 
 projecting a single second sample pattern to the light-uniform device; 
 capturing the projected single second sample pattern; 
 using a second camera look-up table to calibrate a second practical pattern obtained by capturing the projected single second sample pattern; 
 obtaining a calibrated pattern; 
 determining a plurality of displacement amounts of the calibrated pattern and the single second sample pattern to gain a first projection look-up table; and 
 using the interpolation method to transform the first projection look-up table into a second projection look-up table, as the resulted projection look-up table. 
 
     
     
         3 . The method for the 3-D projection printing system according to  claim 2  further comprising the steps of:
 providing a single first sample pattern to the calibration fixture system; 
 obtaining a first practical pattern by capturing the single first sample pattern; 
 determining a plurality of displacement amounts of the first practical pattern and the single first sample pattern to gain a first camera look-up table; and 
 using an interpolation method to transform the first camera look-up table into the second camera look-up table. 
 
     
     
         4 . The method for the 3-D projection printing system according to  claim 3  further comprising the steps of:
 copying the second projection look-up table to a calculation control system for becoming the resulted projection look-up table; 
 using the resulted projection look-up table to calibrate the plurality of sliced printing files; 
 transmitting the plurality of calibrated sliced printing files to a printing control system of a 3-D printing system; and 
 engaging in the projection printing work. 
 
     
     
         5 . The method for the 3-D projection printing system according to  claim 3  further comprising the steps of:
 using the second projection look-up table as the resulted projection look-up table to calibrate the plurality of sliced printing files; 
 transmitting the plurality of calibrated sliced printing files to a printing control system of the 3-D printing system; and 
 engaging in the projection printing work. 
 
     
     
         6 . The method for the 3-D projection printing system according to  claim 2 , wherein the light-uniform device is a diffuser. 
     
     
         7 . The method for the 3-D projection printing system according to  claim 4 , wherein the calculation control system is a computer, a station, a CPU, a software, a firmware, or a network system. 
     
     
         8 . The method for the 3-D projection printing system according to  claim 2 , wherein the calibration fixture system is portable. 
     
     
         9 . A 3-D projection printing system comprising:
 a 3-D printing system being used to engage in a projection printing work; and   a calculation control system being used to calibrate a plurality of sliced printing files by a resulted projection look-up table, and the plurality of calibrated sliced printing files sent to the 3-D printing system, wherein the resulted projection look-up table is produced from a projected single second sample pattern.   
     
     
         10 . The 3-D projection printing system according to  claim 9  further comprising:
 a camera, used to capturing a single first sample pattern or the light-uniform device with the projected single second sample pattern thereon. 
 
     
     
         11 . The 3-D projection printing system according to  claim 10  further comprising:
 a reflection mirror, used to reflect images of the camera capturing the single first sample pattern or the light-uniform device with the projected single second sample pattern thereon. 
 
     
     
         12 . The 3-D projection printing system according to  claim 10  further comprising:
 a 3-D printing system, having a printing control system and a storing unit, wherein the printing control system has a projection system; and 
 a calculation control system, having a distortion correction calculation unit, wherein a computer engages that of using the camera to capture the single first sample pattern in order to obtain a first practical pattern, determining a plurality of displacement amounts of the first practical pattern and the single first sample pattern to gain a first camera look-up table, using an interpolation method to transform the first camera look-up table into a second camera look-up table with the camera resolution, storing the second camera look-up table, using the projection system of the printing control system to project the single second sample pattern to the light-uniform device, using the camera to capture the projected single second sample pattern, using the second camera look-up table to calibrate the second practical pattern obtained by that of the camera capturing the projected single second sample pattern so as to obtain the calibrated pattern, determining a plurality of displacement amounts of the calibrated pattern and the single second sample pattern to gain the first projection look-up table, using the interpolation method to transform the first projection look-up table into the second projection look-up table with the projection resolution, wherein the calculation control system stores a second projection look-up table into the storing unit, copies the second projection look-up table to the calculation control system for becoming a third projection look-up table as the resulted projection look-up table, uses the third projection look-up table to calibrate the plurality of sliced printing files, and transmits the plurality of calibrated sliced printing files to the printing control system, and the projection system engages in the projection printing work. 
 
     
     
         13 . The 3-D projection printing system according to  claim 10  further comprising:
 a 3-D printing system, having a printing control system with a projection system, a storing unit and a calculation control system with a distortion correction calculation unit; 
 wherein a computer engages that of using the camera to capture the single first sample pattern in order to obtain a first practical pattern, determining a plurality of displacement amounts of the first practical pattern and the single first sample pattern to gain a first camera look-up table, using an interpolation method to transform the first camera look-up table into a second camera look-up table with the camera resolution, storing the second camera look-up table, using the projection system of the printing control system to project the single second sample pattern to the light-uniform device, using the camera to capture the projected single second sample pattern, using the second camera look-up table to calibrate the second practical pattern obtained by that of the camera capturing the projected single second sample pattern so as to obtain the calibrated pattern, determining a plurality of displacement amounts of the calibrated pattern and the single second sample pattern to gain the first projection look-up table, using the interpolation method to transform the first projection look-up table into a second projection look-up table with the projection resolution, wherein a calculation control system stores the second projection look-up table into the storing unit, uses the second projection look-up table as a resulted projection look-up table to calibrate the plurality of sliced printing files, and transmits the plurality of calibrated sliced printing files to the projection system, and the projection system engages in the projection printing work. 
 
     
     
         14 . The 3-D projection printing system according to  claim 10 , wherein the light-uniform device is a diffuser. 
     
     
         15 . The 3-D projection printing system according to  claim 12 , wherein the calculation control system is a computer, a station, a CPU, a software, a firmware, or a network system. 
     
     
         16 . A 3-D projection printing system comprising:
 a 3-D printer being used to engage in a projection printing work; and   a first computer being used to calibrate a plurality of sliced printing files by a resulted projection look-up table, and the plurality of calibrated sliced printing files sent to the 3-D printer, wherein the resulted projection look-up table is produced from a projected single second sample pattern.   
     
     
         17 . The 3-D projection printing system according to  claim 16  further comprising:
 a camera, used to capturing a single first sample pattern or the diffuser with the projected single second sample pattern thereon. 
 
     
     
         18 . The 3-D projection printing system according to  claim 17  further comprising:
 a reflection mirror, used to reflect images of the camera capturing the single first sample pattern or the diffuser with the projected single second sample pattern thereon. 
 
     
     
         19 . The 3-D projection printing system according to  claim 17  further comprising:
 a 3-D printer, having a CPU and a flash memory, wherein the 3-D printer has a projector; and 
 the first computer, having an FPGA (Field-Programmable Gate Array) accelerator, wherein a second computer engages that of using the camera to capture the single first sample pattern in order to obtain a first practical pattern, determining a plurality of displacement amounts of the first practical pattern and the single first sample pattern to gain a first camera look-up table, using an interpolation method to transform the first camera look-up table into a second camera look-up table with the camera resolution, storing the second camera look-up table, using the projector to project the single second sample pattern to the diffuser, using the camera to capture the second projected single sample pattern, using the second camera look-up table to calibrate the second practical pattern obtained by that of the camera capturing the projected single second sample pattern so as to obtain the calibrated pattern, determining a plurality of displacement amounts of the calibrated pattern and the single second sample pattern to gain the first projection look-up table, using the interpolation method to transform the first projection look-up table into the second projection look-up table with the projection resolution, wherein the first computer stores a second projection look-up table into the flash memory, copies the second projection look-up table to the first computer for becoming a third projection look-up table as the resulted projection look-up table, uses the third projection look-up table to calibrate the plurality of sliced printing files, and transmits the plurality of calibrated sliced printing files to the CPU, and the projector of the 3-D printer engaging in the projection printing work. 
 
     
     
         20 . The 3-D projection printing system according to  claim 17  further comprising:
 a 3-D printer, having a CPU, a projector, a flash memory and an FPGA (Field-Programmable Gate Array) accelerator; 
 wherein a second computer engages that of using the camera to capture the single first sample pattern in order to obtain a first practical pattern, determining a plurality of displacement amounts of the first practical pattern and the single first sample pattern to gain a first camera look-up table, using an interpolation method to transform the first camera look-up table into a second camera look-up table with the camera resolution, storing the second camera look-up table, using the projector to project the single second sample pattern to the diffuser, using the camera to capture the projected single second sample pattern, using the second camera look-up table to calibrate the second practical pattern obtained by that of the camera capturing the projected single second sample pattern so as to obtain the calibrated pattern, determining a plurality of displacement amounts of the calibrated pattern and the single second sample pattern to gain the first projection look-up table, using the interpolation method to transform the first projection look-up table into a second projection look-up table with the projection resolution, storing the second projection look-up table into the flash memory, using the second projection look-up table as a resulted projection look-up table to calibrate the plurality of sliced printing files, and transmitting the plurality of calibrated sliced printing files to the CPU, and the projector of the 3-D printer engaging in the projection printing work.