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In the recent years, many industrial augmented reality (IAR) applications are shifting from video to still images to create a mixed view. This new type of application is called photo-based augmented reality. In order to guarantee the success of these applications, a simple and efficient registration method is required. We present a new method to register an image to a CAD model using a single keyframe. This registration is based on sparse 3D information from the model linked to the keyframe during its offline registration. We demonstrate this method in our in-house IAR software for visual inspection and documentation: VID.