US 2014/0181057 A1Published application

System and method for preventing duplicate uploads of modified photos in a synchronized content management system

AssigneeDropbox, Inc.

InventorsDavid Euresti, Brian Smith, Alicia Chen, Aston Motes, Rian Hunter, Jie Tang

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Abstract

A method and system for automatically rotating image files and preventing duplicate uploads in a remote file storage system is described. The system receives an image file. The system calculates a hash value associated with newly uploaded files. The system then automatically rotates the images based on orientation data associated with the files (if included). The system then compares the hash value(s) associated with the new file(s) with the hash values from the existing files stored on the remote file storage system. If the hash values of any of the new files to be uploaded match a hash value on the hash value list, then the system prevents the new files from being uploaded to the remote file storage system.

Claims22

Dependent claims

A computer-implemented method of modifying image files and uploading the modified image file to a content management system, comprising:

for a first image file:
receive the first image file, wherein the first image file contains a first image in a first orientation and orientation data for the first image;
calculate, by at least one processor, a first hash value for the first image file that corresponds to the first image in the first orientation;
modify, by at least one processor, the first image file by rotating the first image from the first orientation to a second orientation based on the orientation data;
and
store the modified first image file in memory,
for a second image file:
receive the second image file, wherein the second image file contains a second image in a first orientation;
and
calculate, by at least one processor, a second hash value for the second image file that corresponds to the second image in the first orientation;
and
determine whether the first hash value equals the second hash value;
in response to determining that the first hash value equals the second hash value, treating the second image file as a duplicate of the first image file.

10 more elements

Dependencies are inferred from the claim text.