Apparatus and method for correcting image signal

摘要: PURPOSE:To obtain a high-quality radiation image by filtering out the noises of caused error in capacity an amplifier, dispersion sensitivity solid-state photodetector elements and like provided detector comprising many elements. CONSTITUTION:Under state that X rays are not emitted from 1, signal S1 every line element 18 is read out. The value stored correcting table 16 as offset value. Then, 1 iradiated with uniform rays, 16. obtained actually photographing object. correction gain performed for adjusting means 11 AGC amplifier 12. converted logarithm converting 13 A/D 14. resulting S2 inputted into reproducing reproduced.