Method of and arrangement for blurring an image
First Claim
1. A method of reducing the spatial resolution of images comprising:
- acquiring an input image comprising image parts having a spatial resolution larger than a predefined threshold SR pixels/meter, where the spatial resolution is associated with a clarity of an image;
acquiring a depth map associated with said input image;
determining for each pixel p(x,y) a spatial resolution value by means of the depth map; and
processing a region of pixels of said input image for which holds that the spatial resolution value is larger than the predefined threshold SR pixels/meter corresponding to an object in the input image to be privacy protected to obtain a corresponding region of pixels having a spatial resolution value less than 100 pixels/meter to protect privacy information related to human faces and less than 50 pixels/meter to protect privacy information related to license plates in an output image.
2 Assignments
0 Petitions
Accused Products
Abstract
A method of reducing the spatial resolution of images is disclosed. At least one embodiment of the method includes: —acquiring an input image including image parts having a spatial resolution larger than SR pixels/meter; —acquiring a depth map associated with the input image; —determining for each pixel p(x,y) a spatial resolution value by means of the depth map; —processing a region of pixels of the input image for which holds that the spatial resolution value is larger than a predefined threshold corresponding to SR pixels/meter to obtain a corresponding region of pixels having a spatial resolution smaller then or equal to SR pixels/meter in an output image. The method enables to removes privacy information from images by reducing the spatial resolution to a level that the privacy information cannot be recognized in the image anymore.
20 Citations
9 Claims
-
1. A method of reducing the spatial resolution of images comprising:
-
acquiring an input image comprising image parts having a spatial resolution larger than a predefined threshold SR pixels/meter, where the spatial resolution is associated with a clarity of an image; acquiring a depth map associated with said input image; determining for each pixel p(x,y) a spatial resolution value by means of the depth map; and processing a region of pixels of said input image for which holds that the spatial resolution value is larger than the predefined threshold SR pixels/meter corresponding to an object in the input image to be privacy protected to obtain a corresponding region of pixels having a spatial resolution value less than 100 pixels/meter to protect privacy information related to human faces and less than 50 pixels/meter to protect privacy information related to license plates in an output image. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A computer implemented system for reducing the spatial resolution of images, the system comprising:
-
a processor; and memory connected to the processor, the memory comprising a computer program comprising data and instructions arranged, when executed, to allow said processor to; acquire an input image comprising image parts having a spatial resolution larger than a predefined threshold SR pixels/meter, wherein the spatial resolution is associated with a clarity of an image; acquire a depth map associated with said input image; determine for each pixel p(x,y) a spatial resolution value by means of the depth map; and process a region of pixels of said input image for which holds that the spatial resolution value is larger than the predefined threshold SR pixels/meter corresponding to an object in the input image to be privacy protected to obtain a corresponding region of pixels having a spatial resolution value less than 100 pixels/meter to protect privacy information related to human faces and less than 50 pixels/meter to protect privacy information related to license plates in an output image.
-
-
9. A computer program product for use in a data processing system, for reducing the spatial resolution of images, the computer program product comprising a non-transitory computer readable medium storing instructions, which when executed, allows a processor to:
-
acquire an input image comprising image parts having a spatial resolution larger than a predefined threshold SR pixels/meter, wherein the spatial resolution is associated with a clarity of an image; acquire a depth map associated with said input image; determine for each pixel p(x,y) a spatial resolution value by means of the depth map; and process a region of pixels of said input image for which holds that the spatial resolution value is larger than the predefined threshold SR pixels/meter corresponding to an object in the input image to be privacy protected to obtain a corresponding region of pixels having a spatial resolution value less than 100 pixels/meter to protect privacy information related to human faces and less than 50 pixels/meter to protect privacy information related to license plates in an output image.
-
Specification