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Do your product photos or website graphics need to be completely straight and upright? Do you want to see posters on walls, a business card on a table or house facades directly head on, despite having taken your photos in perspective? Then try rectifying your images automatically and precisely using Image Rectifier.
These examples show how images get rectified, usually such that parallel and orthogonal lines become upright horizontal and vertical lines in the resulting image. There are also examples of rectifying image rotation from parallel lines or perspective in only one direction.
Rectified perspective from parallel and orthogonal lines, to make the front surface appear completely flat and square
Rectified perspective from parallel lines in only the vertical direction, so that the vertical lines become parallel in the image
Rectified perspective from parallel lines in only the horizontal direction, so that the horizontal lines become parallel in the image
Rectified image rotation from parallel lines, to rotate the image as if the camera was level with the vertical lines when the image was taken
Rectified image rotation from parallel lines, to rotate the image as if the camera was level with the horizontal lines when the image was taken
Rectified perspective from parallel and orthogonal lines, to make the front facade appear completely flat and square. This gives an artificial perspective on an image such as this, since surfaces non-parallel to the front facades become more distorted
Rectified perspective from parallel lines in only the vertical direction, so that the vertical lines become parallel in the image. This maintains the perspective of seeing the corner of the building but makes the vertical perspective artificial
Rectified image rotation from parallel lines, to rotate the image as if the camera was level with the vertical lines when the image was taken
Rectified perspective from parallel and orthogonal lines, to make the front surface appear completely flat and square
Rectified perspective from parallel lines in only the horizontal direction, so that the floor lines become parallel in the image
Rectified image rotation from parallel lines, to rotate the image as if the camera was level with the horizontal lines when the image was taken
More challenging examples with images containing lines made of deteriorated rock, as well as lines made of marble texture or not aligned with the parallel and orthogonal directions.
Images with a lot of perspective that has been rectified. This illustrates that surfaces not parallel to the rectified surfaces in the image get more distorted than in the original image, while the rectified surfaces become upright.
Rectified perspective from parallel and orthogonal lines
Rectified perspective from parallel lines in only the vertical direction
Rectified image rotation from parallel lines in the vertical direction
The above examples are on the verge of how much perspective we allow, due to the large image files generated by rectifying that much perspective at full image resolution.