A fast and highly practical photoinduced switching liquid crystal device is provided. This configuration makes the image capturing apparatus acquire an image in a more proper state without large-capacity memory. As the master packet engine transmits the data from the queue and the status of the queue changes, the master packet engine and the slave packet engines may use pointers to keep track of which data packets are transmitted, which data packets are drained and which data packets are still in the queue. This makes it invulnerable to geometrical distortions generally caused by such a way of capturing. A quantizer scale is selected for each region or \u201cobject\u201d within each frame such that the target bit rate for the frame is achieved while maintaining a uniform visual quality over the entire frame.