Image recording device that records moving image, method of controlling the same, and storage medium

摘要

An image recording device capable of obtaining a moving image with less noise even in a low illuminance environment when obtaining a moving image having a wide dynamic range. An image pickup device picks up an image of an object over different exposure time periods to output a plurality of image signals. The plurality of image signals output from the image pickup device are synthesized to thereby obtain a synthesized image. The synthesized image is recorded in a memory at a predetermined frame rate. Respective vertical transfer periods for reading out the plurality of image signals are differentiated according to the different exposure time periods, and the sum of the vertical transfer periods is controlled to a time period defined by the predetermined frame rate.

主权项

1. An image recording device comprising:
an image pickup device that accumulates charge to pick up an image of an object over different exposure levels, and outputs the accumulated charge as a plurality of image signals; an image synthesizer that synthesizes the plurality of image signals output from the image pickup device to obtain a synthesized image; a memory that stores the synthesized image at a predetermined frame rate; and a controller that differentiates respective vertical periods according to the different exposure levels, and controls the sum of the vertical periods to a time period defined by the predetermined frame rate, wherein the controller changes the vertical periods according to luminance of the object.