Defective Pixel Correction of an IR-camera-module
GRIN Verlag, 2009 - 52 pages
Bachelor Thesis from the year 2009 in the subject Electrotechnology, grade: 1, University of applied sciences Karnten, language: English, abstract: This paper deals with the substitution of defective sensor pixels regarding an Infrared Energy (IR) camera module. The work includes information about the development of algorithms and the optimization regarding hardware usage of a Field Programmable Gate Array (FPGA). Furthermore, the work outlines the test of the algorithms with the aid of Matrix Laboratory (Matlab) and the implementation in Very high speed integrated circuit Hardware Description Language (VHDL). Simulations of the VHDL module conclude the work.
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200 destroyed 3D surface bad pixels block RAM Bolometers clock signal cluster error Cluster template Column error correction containing the indizes data stream Dead element map dead pixel correction des_image distributed RAM equation erence Finite State Machine Four corner correction FPGA gray-level values grayscale Hardware Description Language illustrates image_1 Imtool Infrared integer Integrated Circuit interface listing 2.7 listing 3.1 line LWIR Matlab microbolometer NETD NTSC order to substitute original image pixel correction module pixel counter pixel number 11 pixel see figure pixel substitution 98 previous pixel pyroelectric detector r_first r_last Random Access Memory rectangle regarding the pixel Register Transfer Level rep_array Repair array containing repaired image rst position seen in gure sensor emulator set the constant simulate Single pixel correction single pixel errors sort_array sorting algorithm Spartan-3A DSP XC3SD3400A substitute the defective substitution algorithms Substitution method substitution values ULIS sensor Value array containing values 11 VHDL module XILINX Spartan-3A DSP