# US 2013/0155474 A1 · Systems and methods for automatic image capture on a mobile device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0155474 A1 - Document ID: US20130155474A1 - Status: Published application - Kind: A1 - Application number: 13/769,833 - Filed: 2013-02-19 - Published: 2013-06-20 - Earliest claimed: 2008-01-18 - Assignees: Mitek Systems, Inc. - Inventors: John J. Roach; Grigori Nepomniachtchi; Robert Couch; Oleg Rybakov; Michael Gillen; Kevin Andrew Bell - Web page: https://patentgrep.com/patent/US20130155474A1 ## CPC - G06V 30/1475: {Inclination or skew detection or correction of characters or of image to be recognised} - G06Q 20/042: {characterized in that the payment protocol involves at least one cheque} - G06Q 20/14: specially adapted for billing systems - G06Q 20/322: {Aspects of commerce using mobile devices [M-devices]} - G06Q 20/3276: {using a pictured code, e.g. barcode or QR-code, being read by the M-device} - G06Q 20/387: {Payment using discounts or coupons (relating to marketing G06Q30/02)} - G06V 10/243: {by compensating for image skew or non-uniform image deformations} - G06V 10/28: Quantising the image, e.g. histogram thresholding for discrimination between background and foreground patterns - G06V 10/32: Normalisation of the pattern dimensions - G06V 30/162: Quantising the image signal - G06V 30/166: Normalisation of pattern dimensions - H04N 1/00129: {with a display device, e.g. CRT or LCD monitor (with a television apparatus H04N1/00283; arrangements for control of display devices G09G)} - G06V 30/10: Character recognition - H04N 1/00244: {with a server, e.g. an internet server (fax-servers or the like for store and forward H04N1/324)} - H04N 1/00307: {with a mobile telephone apparatus (constructional features of portable telephone sets H04M1/0202; mobile radio systems H04W84/00)} - H04N 2101/00: Still video cameras - H04N 2201/001: Sharing resources, e.g. processing power or memory, with a connected apparatus or enhancing the capability of the still picture apparatus - H04N 2201/0084: Digital still camera - G06V: IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING - G06Q: INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract Real-time evaluation and enhancement of image quality prior to capturing an image of a document on a mobile device is provided. An image capture process is initiated on a mobile device during which a user of the mobile device prepares to capture the image of the document, utilizing hardware and software on the mobile device to measure and achieve optimal parameters for image capture. Feedback may be provided to a user of the mobile device to instruct the user on how to manually optimize certain parameters relating to image quality, such as the angle, motion and distance of the mobile device from the document. When the optimal parameters for image capture of the document are achieved, at least one image of the document is automatically captured by the mobile device. ## Claims ### Claim 1 A method of capturing an image of a document on a mobile device, comprising: initializing an image sensor on the mobile device to detect at least one image of the document; measuring a value of at least one parameter related to quality of the at least one image being detected by the image sensor; and capturing at least one image of the document when the value of the at least one measured parameter reaches or exceeds a threshold value. ### Claim 2 (depends on 1) The method of claim 1, wherein the at least one measured parameter is selected from at least one of: an angle of the mobile device with respect to the document; a distance of the mobile device from the document, movement of the mobile device, a lighting level of the image being detected, detection of all four corners of the document, a level of focus of the image being detected, a level of reflection of the document, and a size of the document within the image being detected. ### Claim 3 (depends on 1) The method of claim 1, further comprising adjusting at least one parameter if its value does not reach the threshold value. ### Claim 4 (depends on 1) The method of claim 1, wherein the threshold value of one parameter is changed based on the measured value of a separate parameter. ### Claim 5 (depends on 1) The method of claim 1, wherein a user of the mobile device is provided with feedback prior to the capturing of the at least one image which provides the user with at least one instruction for adjusting the at least one measured parameter. ### Claim 6 (depends on 5) The method of claim 5, wherein the feedback is visual feedback displayed on a display screen of the mobile device that is represented as a visual “icon” or “symbol,” representing how optimized the image is during the capture process. ### Claim 7 (depends on 1) The method of claim 1, further comprising displaying the at least one image being detected by the image sensor in real-time on a display screen of the mobile device. ### Claim 8 (depends on 7) The method of claim 7, further comprising displaying a rectangular-shaped frame on the display screen while the image being detected by the image sensor is being displayed on the display screen. ### Claim 9 (depends on 8) The method of claim 8, wherein the size of the rectangular-shaped frame corresponds to a threshold size of the document needed before the at least one image can be captured. ### Claim 10 (depends on 9) The method of claim 9, wherein the rectangular-shaped frame changes color when edges of the document fit within the rectangular-shaped frame. ### Claim 11 (depends on 9) The method of claim 9, wherein the rectangular-shaped frame animates when edges of the document fit within the rectangular-shaped frame. ### Claim 12 (depends on 7) The method of claim 7, wherein a document-shaped outline is displayed over the probable document. ### Claim 13 (depends on 7) The method of claim 7, wherein an icon or image is displayed over the probable document, tracking the probable document per user movement. ### Claim 14 (depends on 7) The method of claim 7, wherein dynamic user feedback is also displayed on the display screen as text information. ### Claim 15 (depends on 7) The method of claim 7, wherein dynamic user feedback is also displayed on the display screen as non-text information. ### Claim 16 (depends on 7) The method of claim 7, wherein dynamic user feedback is given as audio cues. ### Claim 17 (depends on 7) The method of claim 7, wherein dynamic user feedback is also given as haptic cues. ### Claim 18 (depends on 7) The method of claim 7, wherein a centering image is displayed instead of a rectangular shaped frame. ### Claim 19 A mobile device for capturing an image of a document, comprising: an image sensor which detects at least one image of the document; a measurement unit which measures a value of at least one parameter related to the quality of the at least one image detected by the image sensor; and an image capture unit which captures the at least one image of the document when the value of the at least one measured parameter reaches a threshold value. ### Claim 20 (depends on 19) The mobile device of claim 19, wherein the at least one measured parameter is selected from at least one of: an angle of the mobile device with respect to the document; a distance of the mobile device from the document, movement of the mobile device, a lighting level of the image being detected, a contrast level of the image being taken, detection of all four corners of the document, a level of focus of the image being detected, a level of reflection of the document, and a size of the document within the image being detected. ### Claim 21 (depends on 19) The mobile device of claim 19, wherein the at least one parameter is adjusted if its value does not reach the threshold value. ### Claim 22 (depends on 19) The mobile device of claim 19, wherein the threshold value of one parameter is changed based on the measured value of a separate parameter. ### Claim 23 (depends on 19) The mobile device of claim 19, wherein a user of the mobile device is provided with feedback prior to the capturing of the at least one image which provides the user with at least one instruction for adjusting the at least one measured parameter. ### Claim 24 (depends on 23) The mobile device of claim 23, wherein the feedback is visual feedback displayed on a display screen of the mobile device. ### Claim 25 (depends on 23) The mobile device of claim 23, wherein the feedback is audio played through the speaker output of the mobile device. ### Claim 26 (depends on 23) The mobile device of claim 23, wherein the feedback is haptic actuated through the vibration actuator of the mobile device. ### Claim 27 (depends on 24) The mobile device of claim 24, wherein the at least one image being detected by the image sensor is displayed in real-time on a display screen of the mobile device. ### Claim 28 (depends on 27) The mobile device of claim 27, wherein a document size detection unit displays a rectangular-shaped frame on the display screen while the image being detected by the image sensor is being displayed on the display screen. ### Claim 29 (depends on 28) The mobile device of claim 28, wherein the size of the rectangular-shaped frame corresponds to a threshold size of the document needed before the at least one image can be captured. ### Claim 30 (depends on 29) The mobile device of claim 29, wherein the rectangular-shaped frame changes color or animates when edges of the document fit within the rectangular-shaped frame.