A device for separating piece goods to be stored in a picking device, comprising: a feed device for providing a plurality of non-separated piece goods in a receiving area extending in an X- and Y-direction of the device, an upper recording device situated in the Z-direction, orthogonal to the X- and Y-directions, above the feed device for capturing images of piece goods (2, 3) situated on the feed device in the receiving area, a control device coupled to the upper recording device for evaluating images produced with the upper recording device and for determining a piece good to be picked from the plurality of piece goods, a conveyor coupled to the control device having a gripping means (41a, 41b) rotatable about the Z-axis for picking a piece good determined by the control device from the plurality of piece goods, a deposit surface situated downstream from the receiving area in the X-direction for depositing piece goods picked by the conveyor, characterized by a lateral recording device for producing at least one image of a piece good picked by the conveyor, wherein the control device is configured so that the at least one image produced with the lateral recording device is processed for ascertaining the dimensions of the picked piece good, wherein, if not all dimensions of the picked piece good are able to be determined, the picked piece good is rotated by a predetermined angle about the Z-axis and another image is produced, and based on the results of the image processing, the orientation of the picked piece good is ascertained and the preferred storage surface of the picked piece good is established on the basis of specifications by the control device, wherein the conveyor is activated as a function of the orientation and of the preferred storage surface in such a way that a picked piece good is situated on a preferred storage surface on the deposit surface, wherein the recording device is a 3D recording device for capturing 3D images. a feed device for providing a plurality of non-separated piece goods in a receiving area extending in an X- and Y-direction of the device, an upper recording device situated in the Z-direction, orthogonal to the X- and Y-directions, above the feed device for capturing images of piece goods (2, 3) situated on the feed device in the receiving area, a control device coupled to the upper recording device for evaluating images produced with the upper recording device and for determining a piece good to be picked from the plurality of piece goods, a conveyor coupled to the control device having a gripping means (41a, 41b) rotatable about the Z-axis for picking a piece good determined by the control device from the plurality of piece goods, a deposit surface situated downstream from the receiving area in the X-direction for depositing piece goods picked by the conveyor, characterized by a lateral recording device for producing at least one image of a piece good picked by the conveyor, wherein the control device is configured so that the at least one image produced with the lateral recording device is processed for ascertaining the dimensions of the picked piece good, wherein, if not all dimensions of the picked piece good are able to be determined, the picked piece good is rotated by a predetermined angle about the Z-axis and another image is produced, and based on the results of the image processing, the orientation of the picked piece good is ascertained and the preferred storage surface of the picked piece good is established on the basis of specifications by the control device, wherein the conveyor is activated as a function of the orientation and of the preferred storage surface in such a way that a picked piece good is situated on a preferred storage surface on the deposit surface, wherein the recording device is a 3D recording device for capturing 3D images.