# US 10,373,290 B2 · Zoomable digital images > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,373,290 B2 - Document ID: US10373290B2 - Status: Granted - Kind: B2 - Application number: 15/614,366 - Filed: 2017-06-05 - Published: 2018-12-06 - Granted: 2019-08-06 - Earliest claimed: 2017-06-05 - Assignees: Sap SE - Applicants: Sap SE - Inventors: Han Xiang Chen; Letao Chen - Web page: https://patentgrep.com/patent/US10373290B2 ## CPC - G06T 3/40: Scaling of whole images or parts thereof, e.g. expanding or contracting - G06T: IMAGE DATA PROCESSING OR GENERATION, IN GENERAL ## Abstract Some embodiments provide a non-transitory machine-readable medium that stores a program. The program reads a file representing a source image. The file specifies an interior image and a set of successive exterior images that correspond to a set of successive zoom levels. The interior image includes a plurality of pixels. Each pixel in the interior image has a particular size. Each exterior image in the set of successive exterior images includes a plurality of pixels configured to encompass the interior image. The plurality of pixels of each successive interior image have a successively larger size than the particular size. The program generates the source image based on the interior image and the set of successive exterior images. The program receives a selection of a zoom level in the set of successive zoom levels. The program generates a target image based on the selected zoom level and the source image. ## Claims ### Claim 1 A non-transitory machine-readable medium storing a program executable by at least one processing unit of a device, the program comprising sets of instructions for: reading, from a file storage configured for storing files of source images in a particular file format, a file representing a source image, the file comprising a first image and a second image, the first image comprising a first plurality of pixels, the second image comprising a second plurality of pixels, each pixel in the first and second images having a same, particular size; generating the source image by: using the first image as an interior image of the source image, and generating a set of successive exterior images that corresponds to a set of successive zoom levels, each zoom level in the set of successive zoom levels successively larger than any prior zoom levels, each exterior image in the set of successive exterior images comprising a plurality of pixels from a portion of the second plurality of pixels of the second image configured to completely encompass the interior image and any prior exterior images, a size of each pixel in the plurality of pixels of each exterior image in the set of successive exterior images larger than the particular size and a size of the plurality of pixels of any prior exterior image, the size of each pixel in the plurality of pixels of each exterior image in the set of successive exterior images based on a factor of the size of a side of the interior image divided by the size of the side of the interior image minus two pixels; receiving a selection of a zoom level in the set of successive zoom levels; and generating a target image based on the selected zoom level and the source image. ### Claim 2 (depends on 1) The non-transitory machine-readable medium of claim 1, wherein generating the target image comprises: determining a subset of the set of successive exterior images based on the selected zoom level; and generating pixels of the target image based on the subset of the set of successive exterior images. ### Claim 3 (depends on 1) The non-transitory machine-readable medium of claim 1, wherein the program further comprises a set of instructions for displaying the target image on a display of the device. ### Claim 4 (depends on 1) The non-transitory machine-readable medium of claim 1, wherein generating the source image comprises: dividing the set of successive exterior images into a plurality of groups of successive exterior images; and generating a plurality of subimages, each subimage in the plurality of subimages comprising an interior image and a subset of the plurality of groups of successive exterior images. ### Claim 5 (depends on 4) The non-transitory machine-readable medium of claim 4, wherein generating the target image comprises: identifying the subset of the plurality of groups of successive exterior images corresponding to the selected zoom level; and generating the target image based on the identified subset of the plurality of groups of successive exterior images. ### Claim 6 (depends on 1) The non-transitory machine-readable medium of claim 1, wherein generating the target image comprises, for each pixel in the target image, determining colors of the pixel in the target image based on colors of pixels in the source image overlapped by the pixel in the target image. ### Claim 7 (depends on 6) The non-transitory machine-readable medium of claim 6, wherein determining, for each pixel in the target image, the colors of the pixel in the target image is further based on areas of portions of the pixels in the source image overlapped by the pixel in the target image. ### Claim 8 A method, executable by a device, comprising: reading, from a file storage configured for storing files of source images in a particular file format, a file representing a source image, the file comprising a first image and a second image, the first image comprising a first plurality of pixels, the second image comprising a second plurality of pixels, each pixel in the first and second images having a same, particular size; generating the source image by: using the first image as an interior image of the source image, and generating a set of successive exterior images that corresponds to a set of successive zoom levels, each zoom level in the set of successive zoom levels successively larger than any prior zoom levels, each exterior image in the set of successive exterior images comprising a plurality of pixels from a portion of the second plurality of pixels of the second image configured to completely encompass the interior image and any prior exterior images, a size of each pixel in the plurality of pixels of each exterior image in the set of successive exterior images larger than the particular size and a size of the plurality of pixels of any prior exterior image, the size of each pixel in the plurality of pixels of each exterior image in the set of successive exterior images based on a factor of the size of a side of the interior image divided by the size of the side of the interior image minus two pixels; receiving a selection of a zoom level in the set of successive zoom levels; and generating a target image based on the selected zoom level and the source image. ### Claim 9 (depends on 8) The method of claim 8, wherein generating the target image comprises: determining a subset of the set of successive exterior images based on the selected zoom level; and generating pixels of the target image based on the subset of the set of successive exterior images. ### Claim 10 (depends on 8) The method of claim 8 further comprising displaying the target image on a display of the device. ### Claim 11 (depends on 8) The method of claim 8, wherein generating the source image comprises: dividing the set of successive exterior images into a plurality of groups of successive exterior images; and generating a plurality of subimages, each subimage in the plurality of subimages comprising an interior image and a subset of the plurality of groups of successive exterior images. ### Claim 12 (depends on 11) The method of claim 11, wherein generating the target image comprises: identifying the subset of the plurality of groups of successive exterior images corresponding to the selected zoom level; and generating the target image based on the identified subset of the plurality of groups of successive exterior images. ### Claim 13 (depends on 8) The method of claim 8, wherein generating the target image comprises, for each pixel in the target image, determining colors of the pixel in the target image based on colors of pixels in the source image overlapped by the pixel in the target image. ### Claim 14 (depends on 13) The method of claim 13, wherein determining, for each pixel in the target image, the colors of the pixel in the target image is further based on areas of portions of the pixels in the source image overlapped by the pixel in the target image. ### Claim 15 A system comprising: a set of processing units; and a non-transitory computer-readable medium storing instructions that when executed by at least one processing unit in the set of processing units cause the at least one processing unit to: read, from a file storage configured for storing files of source images in a particular file format, a file representing a source image, the file comprising a first image and a second image, the first image comprising a first plurality of pixels, the second image comprising a second plurality of pixels, each pixel in the interior image having a same, particular size; generate the source image by: using the first image as an interior image of the source image, and generating a set of successive exterior images that corresponds to a set of successive zoom levels, each zoom level in the set of successive zoom levels successively larger than any prior zoom levels, each exterior image in the set of successive exterior images comprising a plurality of pixels from a portion of the second plurality of pixels of the second image configured to completely encompass the interior image and any prior exterior images, a size of each pixel in the plurality of pixels of each exterior image in the set of successive exterior images larger than the particular size and the size of the plurality of pixels of any prior exterior image, the size of each pixel in the plurality of pixels of each exterior image in the set of successive exterior images based on a factor of the size of a side of the interior image divided by the size of the side of the interior image minus two pixels; receive a selection of a zoom level in the set of successive zoom levels; and generate a target image based on the selected zoom level and the source image. ### Claim 16 (depends on 15) The system of claim 15, wherein generating the target image comprises: determining a subset of the set of successive exterior images based on the selected zoom level; and generating pixels of the target image based on the subset of the set of successive exterior images. ### Claim 17 (depends on 15) The system of claim 15, wherein the instructions further cause the at least one processing unit to display the target image on a display of the system. ### Claim 18 (depends on 15) The system of claim 15, wherein generating the source image comprises: dividing the set of successive exterior images into a plurality of groups of successive exterior images; and generating a plurality of subimages, each subimage in the plurality of subimages comprising an interior image and a subset of the plurality of groups of successive exterior images. ### Claim 19 (depends on 18) The system of claim 18, wherein generating the target image comprises: identifying the subset of the plurality of groups of successive exterior images corresponding to the selected zoom level; and generating the target image based on the identified subset of the plurality of groups of successive exterior images. ### Claim 20 (depends on 15) The system of claim 15, wherein generating the target image comprises, for each pixel in the target image, determining colors of the pixel in the target image based on colors of pixels in the source image overlapped by the pixel in the target image and areas of portions of the pixels in the source image overlapped by the pixel in the target image.