Accurately placing virtual objects in a scene is a challenging tasks in handheld augmented reality (HAR). To add and arrange virtual objects in HAR, users must manipulate 6 degrees of freedom (DoFs) of the virtual object, namely: position (3) and orientation (3). However, it is difficult to manipulate all DoFs with the two-dimensional display of the handheld device. We present SlidAR+, a method for controlling the position and orientation of objects in HAR. SlidAR+ is an extension of SlidAR [1], a technique that allows users to control the position of a virtual object by manipulating only 1 DoF. We use the direction of gravity as a constraint to improve the user’s control and reduce the time it takes to adjust the orientation. Upon comparing it with a state-of-the-art object manipulation method, using SlidAR+, user were able to complete the tasks faster under our expected conditions and were also preferred by most participants.

在手持增强现实（HAR）中，准确地将虚拟对象放置在场景中是一项艰巨的任务。为了在HAR中添加和布置虚拟对象，用户必须操纵虚拟对象的6个自由度（DoF），即：位置（3）和方向（3）。但是，很难通过手持设备的二维显示来操纵所有DoF。我们提出了SlidAR +，这是一种用于控制HAR中对象的位置和方向的方法。SlidAR +是SlidAR [1]的扩展，SlidAR [1]是一种技术，它允许用户通过仅操纵1个DoF来控制虚拟对象的位置。我们将重力方向用作约束，以改善用户的控制并减少调整方向所需的时间。将其与使用SlidAR +的最新对象操作方法进行比较后，