DIGITAL MAKEUP

• US 20140328509A1
• Filed: 12/04/2012
• Published: 11/06/2014
• Est. Priority Date: 12/04/2011
• Status: Active Grant

• Current Assignee: Digital Makeup Ltd.
• Original Assignee: Digital Makeup Ltd.
• Inventors: Guissin, Rami, Lavi, Eitan, Lifchitz, Guy
• Granted Patent: US 9,495,582 B2
• Time in Patent Office: Days
• US Class Current: 382/100
• CPC Class Codes: G06T 2207/20024 Filtering details
• CPC Class Codes: G06T 2207/30201 Face
• CPC Class Codes: G06T 5/20 using local operators
• CPC Class Codes: G06T 5/70 Denoising; Smoothing
• CPC Class Codes: G06T 7/13 Edge detection
• CPC Class Codes: G06V 40/171 Local features and components; Facial parts eye characteristics G06V40/18; Occluding parts, e.g. glasses; Geometrical relationships

Abstract

An aspect of some embodiments of the present invention relates to a system for processing an image of a human face, the system comprising a data processing and analyzing utility comprising: a high-pass filtering module configured for receiving an input image data indicative of a characteristic of the image and outputting a high-pass signal indicative of at least one of edges and contours of the face in the input image data; at least one band-pass filtering module configured for receiving data indicative of the input image data and outputting a bandpass signal indicative of low-contrast slowly-varying qualitative features of the face; a low-pass filtering module configured for receiving data indicative of the input image data and outputting a low-pass signal in which low-contrast regions are smoothed and high-contrast regions are preserved; a feature computation module configured for receiving the input image data and calculating a localized feature of the image for a plurality of pixels of the image; a strength computation module configured for receiving said localized feature from the feature computation module, using the localized feature for determining a localized operand to determine a strength of filters to be used in each of the high-pass filtering module, band-pass filtering module, low-pass filtering module at said plurality of the pixels, and transmitting the localized operand to each of said filtering modules; at least one transformation module configured for receiving and altering at least a portion of at least one of the high-pass signal, the bandpass signal, and the low-pass signal; and an addition module configured for receiving the high-pass signal, the bandpass signal, and the low-pass signal after said at least portion thereof has been altered, and for adding the received signals together, thus yielding an output signal indicative of a characteristic of an altered image.

Claims

1. A system for processing an image of a human face, the system comprising a data processing and analyzing utility comprising:

a high-pass filtering module configured for receiving an input image data indicative of a characteristic of the image and outputting a high-pass signal indicative of at least one of edges and contours of the face in the input image data;

at least one band-pass filtering module configured for receiving data indicative of the input image data and outputting a bandpass signal indicative of low-contrast slowly-varying qualitative features of the face;

a low-pass filtering module configured for receiving data indicative of the input image data and outputting a low-pass signal in which low-contrast regions are smoothed and high-contrast regions are preserved;

a feature computation module configured for receiving the input image data and calculating a localized feature of the image for a plurality of pixels of the image;

a strength computation module configured for receiving said localized feature from the feature computation module, using the localized feature for determining a localized operand to determine a strength of filters to be used in each of the high-pass filtering module, band-pass filtering module, low-pass filtering module at said plurality of the pixels, and transmitting the localized operand to each of said filtering modules;

at least one transformation module configured for receiving and altering at least a portion of at least one of the high-pass signal, the bandpass signal, and the low-pass signal; and

an addition module configured for receiving the high-pass signal, the bandpass signal, and the low-pass signal after said at least portion thereof has been altered, and for adding the received signals together, thus yielding an output signal indicative of a characteristic of an altered image.

2. The system of claim 1, wherein the high-pass filtering module comprises:

a first filtering utility configured for receiving the input image data, applying a first smoothing filter thereto, and outputting a first smoothed signal; and

a first subtracting utility for subtracting the first smoothed signal from the input image data, thus yielding the high-pass signal.

3. The system of claim 2, wherein the at least one bandpass filtering device comprises:

a second filtering utility, configured for receiving the input image data, applying a second smoothing filter thereto, and outputting a second smoothed signal; and

a second subtracting utility for subtracting the second smoothed signal from the first smoothed signal, thus yielding the at least one bandpass signal.

4. The system of claim 3, wherein the low-pass filtering module comprises the second filtering utility, the second smoothed signal being the low-pass signal.

5. The system of according to claim 2, wherein the at least one bandpass filtering module comprises:

a second filtering utility configured for receiving the first smoothed signal, applying a second smoothing filter to the first smoothed signal, and outputting a second smoothed signal; and

a second subtracting utility for subtracting the second smoothed signal from the first smoothed signal, thus yielding the at least one bandpass signal.

6. The system of claim 5, wherein the low-pass filtering module comprises the second filtering unit, the second smoothed signal being the low-pass signal.

7. The system of any one of claims 2 to 6, wherein the strength computation module is configured for determining the localized operand to determine a strength of the smoothing filters at the plurality of the pixels, and transmitting the localized operand to the filtering utilities.

8. The system of any one of claims 2 to 7, wherein at least one of the filtering utilities is configured for receiving an individual global parameter, and using the global parameter and the localized operand to calculate the strength of the respective smoothing filter.

9. The system of any of claims 2 to 7, wherein:

the strength computation module is configured for determining a plurality of localized operands, each localized operand corresponding to a respective filtering utility and being indicative of the strength of the respective smoothing filter; and

each filtering utility is configured for using the respective localized operand for determining the strength of the respective smoothing filter.

10. The system of any one of the claims 2-9, wherein at least one of the filtering utilities is configured for applying a multi-dimensional adaptive smoothing filter to a respective received signal.

11. The system of any one of claims 2-10, wherein at least one of the filtering utilities is configured for applying a linear smoothing filter to a respective received signal.

12. The system of claim 11, wherein the first filtering utility is configured for applying the linear smoothing filter.

13. The system of any one of claims 2 to 12, comprising an array of the bandpass filtering modules, wherein each bandpass filtering module comprises:

a respective filtering utility configured for receiving said data indicative of the input image data and applying a respective smoothing filter thereto, and outputting a respective smoothed signal; and

a respective subtracting utility for subtracting the respective smoothed signal from a previously smoothed signal output by a preceding filtering utility comprised in a preceding filtering module, thus yielding a respective bandpass signal.

14. The system of claim 13, wherein the low-pass filtering module comprises a filtering utility being a part of a last bandpass filtering module in said array of the bandpass filtering modules, to generate a last smoothed signal being the low-pass signal.

15. A system for processing an image of a human face, the system comprising:

a first high-pass filtering module configured for receiving an input image data indicative of a characteristic of the image and outputting a first high-pass signal indicative of at least edges and/or contours of the face in the image;

a decimating module configured for receiving the input image data, and processing the received image data for reducing a size of the input image to produce a first decimated image, and outputting a decimated signal indicative of the first decimated image;

a filtering system according to any one of the preceding claims, configured for receiving and processing the first decimated signal, and outputting a first output signal indicative of a first output image;

an interpolation module configured for receiving the first output signal, and interpolating the first output signal to output an interpolated signal indicative of an image having a size equal to the size of the input image; and

a first addition module configured for receiving the interpolated signal and the first output signal, and adding the interpolated signal and the first output signal together, thus yielding a second output signal indicative of a characteristic of an altered image.

16. The system of claim 15, comprising a first transformation module configured for altering at least a portion of the first high-pass signal to output a first transformed signal, the first addition module being configured for receiving the interpolated signal and the first transformed signal, and adding them together, thus yielding a second output signal indicative of a characteristic of an altered image

17. The system of claim 15 or 16, wherein the first high-pass filtering module comprises:

a second interpolation module configured for receiving the decimated signal and interpolating the decimated signal to output a second interpolated signal, the first high-pass filtering module being configured for receiving the input image data and the second interpolated signal; and

a first subtracting unit configured for subtracting the second interpolated signal from the input image data thus yielding the first high-pass signal.

18. The system of claim 17, comprising a second decimating module configured for performing a second decimation on the first decimated signal to output a second decimated signal, which is received and processed by said filtering system to output the first output signal.

19. A method for processing an input signal indicative of a characteristic of an image of a human face, the method being implemented by a data processing and analyzing utility and comprising:

(i) processing input image data to calculate a localized feature of the image for a plurality of pixels of the image;

(ii) using the localized feature for determining a localized operand;

(iii) applying a high-pass filter, at least one bandpass filter, and a low-pass filter to data indicative of the input image data, thus generating a high-pass component signal, at least one bandpass component signal, and a low-pass component signal, such that a strength of each filter is dependent on the localized operand;

(iv) applying at least one transformation to at least one of the high-pass component signal, bandpass component signal, and low-pass component signal, for altering at least a portion of at least one of the component signals;

(v) adding the component signals after at least one of them component has been altered, thus yielding an output signal indicative of a characteristic of an altered image.

20. A method for processing an input signal indicative of indicative of a characteristic of an image of a human face, the method comprising:

applying a first high-pass filter to input image data to generate a first high-pass signal indicative of at least edges and/or contours of the face in the image;

decimating the input image data to output a decimated signal indicative of an image of reduced size with respect to the input image;

applying steps (i) to (v) of claim 19 to the decimated signal and outputting a first output signal;

interpolating the first output signal to output an interpolated signal indicative of an image having a size equal to the size of the input image;

adding the first output signal to the interpolated signal thus yielding a second output signal indicative of a characteristic of an altered image.

21. A computer readable medium that is useful in conjunction with a computer and on which is stored a data processing and analyzing utility configured to cause the computer to respond to input image data to carry out the following:

processing input image data to calculate a localized feature of the image for a plurality of pixels of the image;

using the localized feature for determining a localized operand;

applying a high-pass filter, at least one bandpass filter, and a low-pass filter to data indicative of the input image data, thus generating a high-pass component signal, at least one bandpass component signal, and a low-pass component signal, such that a strength of each filter is dependent on the localized operand;

applying at least one transformation to at least one of the high-pass component signal, bandpass component signal, and low-pass component signal, for altering at least a portion of at least one of the component signals;

adding the component signals after at least one of them component has been altered, thus yielding an output signal indicative of a characteristic of an altered image.