| 摘要 |
Radiation is received from a scene impinging on at least one focal plane. A first spectral band is sampled to obtain a first band mean signal level, and either a first band image frame is collected when the first band mean signal level is at or below a first threshold, or a first image frame is collected in a first sub-band when the first band mean signal level is above the first threshold. A second sub-band is sampled to obtain a second sub-band mean signal level and a second image frame is collected in the second sub-band when the second sub-band mean signal level is at or below a second threshold. An image to be displayed is generated by combining at least two collected frames. |
