BACKGROUND

1. Technical Field

The present disclosure relates to a circuit device, an electronic apparatus, a mobile body, and the like.

2. Related Art

Head up displays are known that display information in a field of view of a user in a superimposed manner by displaying an image on a transparent screen or the like. As a result of combining such a head up display and the AR technology, a virtual object can be displayed by a head up display such that the virtual object tracks real objects such as a front running car and a road. AR is an abbreviation of augmented reality.

In a technique disclosed in JP-A-2019-98756, the change in orientation in a low frequency band is corrected by image processing, and the change in orientation in a high frequency band is corrected by a projection optical unit. As a result of correcting the change in orientation in the high frequency band by the projection optical unit, when the orientation of the vehicle changes, the position of a projection image is corrected such that the virtual image is displayed at a correct position relative to the real image.

In a head up display using the AR technology, a sensor output is acquired, rendering of a virtual object is performed using the sensor output, warp processing is performed on a rendering image, and the image subjected to the warp processing is displayed by the head up display. In such a display system, there is a time lag between when the sensor output to be used for rendering was sampled and when display is performed by the head up display, and therefore the movement of a vehicle or the like that occurs in this period is not reflected on the display position of the virtual object. Therefore, a position shift occurs between the rendered virtual object and the real object at the time of display, and it is desirable that such a position shift due to latency is minimized as far as possible.

SUMMARY

One aspect of the present disclosure relates to a circuit device that performs display control of a head up display that displays, in a display region, a virtual object corresponding to a real object in the real space, the circuit device including: an interface to which tracking information that is at least one of first tracking information of a mobile body in which the head up display is mounted, second tracking information of a viewer of the head up display, and third tracking information of the real object, and a rendering image including the virtual object are input; a parameter computation unit configured to compute a latency compensation parameter for compensating a latency including a rendering processing latency of the rendering image based on the tracking information; and a warp processing unit configured to generate a display image to be displayed in the display region by performing warp processing in which coordinate transformation is performed on the rendering image according to a curve of the display region, wherein the warp processing unit performs, in the warp processing, latency compensation processing for compensating the position of the virtual object in the display region based on the latency compensation parameter.

Also, another aspect of the present disclosure relates to an electronic apparatus including the above-described circuit device.

Also, another aspect of the present disclosure relates to a mobile body including the above-described circuit device.

