Abstract: An example non-transitory computer-readable medium includes instructions executable by a processor to detect boundaries of a representation of a document page in a captured image, model the boundaries of the representation of the document page as nonlinear curves, use the nonlinear curves to transform pixels of the representation of the document page into pixels of a dewarped representation of the document page, and output a dewarped image based on the dewarped representation of the document page.

Abstract: In example implementations, an apparatus is provided. The apparatus includes a video camera, a detection device, a tracking device, a display, and a processor. The video camera is to capture a video image of a plurality of documents. The detection device is to detect the plurality of documents in a frame of the video image. The tracking device is to track each one of the plurality of documents that is detected in a series of frames of the video image. The display is to generate a visual indicator around each one of the plurality of documents in the video image that is displayed. The processor is in communication with the video camera, the detection device, the tracking device, and the display to control execution of the video camera, the detection device, the tracking device, and the display.

Abstract: Example implementations relate to page structure adjustments. The system may convert a binary tree representation of a plurality of content items to an initial page structure that includes a plurality of regions. The system may determine a region metric of each of the plurality of regions. The system may determine an item metric of each of the plurality of content items rendered on a respective region of the plurality of regions. The system may calculate an error associated with the initial page structure based on the region metric and the item metric for each of the plurality of regions. The system may generate a plurality of adjusted page structures and calculate an error associated with each adjusted page structure. The system may select an adjusted page structure from the plurality of adjusted page structures based on the selected adjusted page structure being associated with an error below a threshold.

Abstract: Example implementations relate to page structure adjustments. The system may convert a binary tree representation of a plurality of content items to an initial page structure that includes a plurality of regions. The system may determine, from an initial rendering, a region metric of each of the plurality of regions of the initial page structure. The system may determine, from the initial rendering, an item metric of each of the plurality of content items rendered on a respective region of the plurality of regions. The system may calculate an error associated with the initial page structure based on the region metric and the item metric for each of the plurality of initially rendered regions. The system may generate a plurality of adjusted page structures and calculate, from a corresponding rendering of each, an error associated with each adjusted page structure of the plurality of adjusted page structures.