PROCESSING OF AN IMAGE REPRESENTATIVE OF AN OBSERVATION ZONE

• US 20100245386A1
• Filed: 03/23/2010
• Published: 09/30/2010
• Est. Priority Date: 03/24/2009
• Status: Active Grant

• Current Assignee: Orange S.A.
• Original Assignee: Orange S.A.
• Inventors: GACHIGNARD, OLIVIER
• Granted Patent: US 8,547,397 B2
• Time in Patent Office: Days
• US Class Current: 345/625
• CPC Class Codes: G06T 2207/10021 Stereoscopic video; Stereoscopic image sequence
• CPC Class Codes: G06T 2207/30196 Human being; Person
• CPC Class Codes: G06T 7/33 using feature-based methods

Abstract

A method for processing data, in particular an image representative of an observation zone in which is situated an object arranged with respect to a reference plane.

Such a method comprises the following steps:

• • reception of the image which has been captured beforehand by means of first and second image capture devices,
  • display (EV2) of the image received in a plane which comprises an object plane, containing said object, and said reference plane which has been determined beforehand as being the plane situated at the intersection of a conical beam and of a parallel beam emitted respectively by said first and second image capture devices,
  • determination (EV3), in the displayed image, of the number of pixels separating two contiguous sides, respectively of the object plane and of the reference plane, and extending along a determined direction (X or Y),
  • correlation (EV4) of the determined number of pixels with the value of the measurement of the real distance (d) which separates said object from said reference plane.

Claims

1. A method for processing data, in particular an image representative of an observation zone in which is situated an object arranged with respect to a reference plane, comprising the following steps:

reception of said image which has been captured beforehand by means of first and second image capture devices,

display of said image received,

said method comprising the following steps;

in the course of the display step, display of said image in a plane which comprises an object plane, containing said object, and said reference plane which has been determined beforehand as being the plane situated at the intersection of a conical beam and of a parallel beam emitted respectively by said first and second image capture devices,

determination, in the displayed image, of the number of pixels separating two contiguous sides, respectively of the object plane and of the reference plane, and extending along a determined direction (X or Y),

correlation of the determined number of pixels with the value of the measurement of the real distance which separates said object from said reference plane.

2. The method according to claim 1, comprising, subsequent to said correlation step, a calculation step for calculating the distance of said object with respect to the first and second image capture devices.

3. The method according to claim 1, comprising, in the case where a sound is emitted by said object or in the vicinity of the latter, the following steps:

calculation of the real distance which separates the object from said reference plane, on the basis of the intensity of said sound emitted,

comparison of said calculated real distance with the real distance obtained in the course of the correlation step.

4. The method according to claim 2, comprising, in the case where a sound is emitted by said object or in the vicinity of the latter, the following steps:

calculation of the real distance which separates the object from said reference plane, on the basis of the intensity of said sound emitted,

comparison of said calculated real distance with the real distance obtained in the course of the correlation step.

5. The processing method according to claim 1, comprising, subsequent to the correlation step, in the case where at least one other object is situated in the observation zone, a comparison step for comparing the real distances which separate each object from the reference plane.

6. The processing method according to claim 1, comprising a segmentation step for segmenting said image received.

15. A computer program comprising instructions for implementing the method for processing data according to claim 1, when it is executed by a device for processing an image representative of an observation zone in which is situated an object arranged with respect to a reference plane, comprising means for receiving said image which has been captured beforehand by means of first and second image capture devices, and means for displaying said image received.

16. A computer program comprising instructions for implementing the method for processing data according to claim 2, when it is executed by a device for processing an image representative of an observation zone in which is situated an object arranged with respect to a reference plane, comprising means for receiving said image which has been captured beforehand by means of first and second image capture devices, and means for displaying said image received.

17. A computer program comprising instructions for implementing the method for processing data according to claim 3, when it is executed by a device for processing an image representative of an observation zone in which is situated an object arranged with respect to a reference plane, comprising means for receiving said image which has been captured beforehand by means of first and second image capture devices, and means for displaying said image received.

18. A computer program comprising instructions for implementing the method for processing data according to claim 4, when it is executed by a device for processing an image representative of an observation zone in which is situated an object arranged with respect to a reference plane, comprising means for receiving said image which has been captured beforehand by means of first and second image capture devices, and means for displaying said image received.

19. A computer program comprising instructions for implementing the method for processing data according to claim 5, when it is executed by a device for processing an image representative of an observation zone in which is situated an object arranged with respect to a reference plane, comprising means for receiving said image which has been captured beforehand by means of first and second image capture devices, and means for displaying said image received.

20. A recording medium readable by a computer on which is recorded a computer program comprising instructions for implementing the method for processing data according to claim 1, when said program is executed by a device for processing an image representative of an observation zone in which is situated an object arranged with respect to a reference plane, comprising means for receiving said image which has been captured beforehand by means of first and second image capture devices, and means for displaying said image received.

7. A device for processing data, in particular an image representative of an observation zone in which is situated an object arranged with respect to a reference plane, the device comprising:

means for receiving said image which has been captured beforehand by means of first and second image capture devices,

means for displaying said image received, said display means are designed to display said image in a plane which comprises an object plane, containing said object, and said reference plane which has been determined beforehand as being the plane situated at the intersection of a conical beam and of a parallel beam emitted respectively by said first and second image capture devices,

means for determining in the displayed image the number of pixels separating two contiguous sides, respectively of the object plane and of the reference plane, and extending along a determined direction (X or Y),

means for correlating the determined number of pixels with the value of the measurement of the real distance which separates said object from said reference plane.

8. The processing device according to claim 7, comprising means for calculating the distance of said object with respect to the first and second image capture devices.

9. The processing device according to claim 7, furthermore comprising:

means for calculating, in the case where a sound is emitted by said object or in the vicinity of the latter, the real distance which separates said object from the reference plane, on the basis of the intensity of the sound emitted,

means for comparing said calculated distance with the distance obtained by the correlation means.

10. The processing device according to claim 8, furthermore comprising:

means for calculating, in the case where a sound is emitted by said object or in the vicinity of the latter, the real distance which separates said object from the reference plane, on the basis of the intensity of the sound emitted,

means for comparing said calculated distance with the distance obtained by the correlation means.

11. The processing device according to claim 7, comprising comparison means for comparing the real distance which separates the object from the reference plane with the real distance which separates another object from the reference plane, in the observation zone.

12. The processing device according to claim 7, comprising means for segmenting said image received.

13. A system for measuring a real distance between at least one object and a reference plane, comprising first and second image capture devices for capturing an observation zone in which is situated said object with respect to the reference plane, said system comprising:

means for determining said reference plane as being the plane situated at the intersection of a conical beam and of a parallel beam emitted respectively by the first and second image capture devices,

a device for processing data comprising;

means for receiving an image of said captured observation zone,

means for displaying said image received in a plane which comprises an object plane, containing said object, and said reference plane,

means for determining in the displayed image the number of pixels separating two contiguous sides, respectively of the object plane and of the reference plane, and extending along a determined direction (X or Y),

means for correlating the determined number of pixels with the value of the measurement of the real distance (d) which separates said object from said reference plane.

14. The system according to claim 13, furthermore comprising an acoustic measurement device which is intended to measure the intensity of a sound emitted by said object or in the vicinity of the latter, said device for processing data furthermore comprising:

means for receiving the value of the measured intensity originating from the acoustic measurement device,

means for calculating the real distance which separates the object from the reference plane, on the basis of the intensity of the sound emitted,

means for comparing the calculated distance with the distance obtained by the correlation means.