发明名称 |
Method and apparatus for minimizing image signal noise, and radiation image read-out method and apparatus |
摘要 |
A method of minimizing image signal noise comprises the steps of feeding an image representing an image to a high-frequency component decreasing device for arbitarily decreasing a high-frequency component, detecting the level of the image signal, and decreasing the high-frequency component of the image signal by the high-frequency component decreasing device in accordance with a decrease in the level of the image signal. A radiation image read-out method for exposing a stimulable phosphor sheet carrying a radiation image stored thereon to stimulating rays which cause the stimulable phosphor sheet to emit light in proportion to the stored radiation energy, and photoelectrically detecting the emitted light to obtain an image signal representing the radiation image comprises the steps of detecting the level of radiation energy stored on the stimulable phosphor sheet, and decreasing the high-frequency component of the image signal by the high-frequency component decreasing device in accordance with a decrease in the level of the stored radiation energy.
|
申请公布号 |
US4977322(A) |
申请公布日期 |
1990.12.11 |
申请号 |
US19870031740 |
申请日期 |
1987.03.30 |
申请人 |
FUJI PHOTO FILM CO., LTD. |
发明人 |
AGANO, TOSHITAKA;SAOTOME, SHIGERU |
分类号 |
H04N1/409 |
主分类号 |
H04N1/409 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|