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Image processing apparatus for detecting coordinate position of characteristic portion of face

An image processing device and coordinate position technology, which is applied in image data processing, image enhancement, image analysis, etc., to achieve the effect of correction of good set position and high efficiency of detection processing

Inactive Publication Date: 2012-11-28
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the above-mentioned prior art, there is room for further efficiency and speed-up in the detection of the position of the feature part of the face included in the image.
[0005] In addition, such a problem exists not only in the case of using AAM, but is also a common problem in image processing for detecting the position of feature parts of a face contained in an image.

Method used

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  • Image processing apparatus for detecting coordinate position of characteristic portion of face
  • Image processing apparatus for detecting coordinate position of characteristic portion of face
  • Image processing apparatus for detecting coordinate position of characteristic portion of face

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0041] A1. The structure of the image processing device:

[0042] figure 1It is an explanatory diagram schematically showing the configuration of the printer 100 as the image processing apparatus in the first embodiment of the present invention. The printer 100 of this embodiment is an inkjet color printer corresponding to a so-called direct thermal printer that prints images based on image data acquired from a memory card MC or the like. The printer 100 includes a CPU 110 for controlling each part of the printer 100, an internal memory 120 composed of ROM and RAM, an operation unit 140 composed of buttons or a touch panel, a display unit 150 composed of a liquid crystal display, a printing mechanism 160, and a card interface. (Card I / F) 170. The printer 100 may also be provided with an interface for data communication with other devices such as a digital camera or a personal computer. The constituent elements of the printer 100 are connected by a bus so as to be capable of...

no. 2 Embodiment

[0114] Figure 18 It is a flowchart showing the flow of the initial arrangement determination process of the characteristic points CP in the second embodiment. Regarding the characteristic point CP initial position setting process, in the first embodiment, the setting unit 210 determines the initial position based on the temporary setting position of the characteristic point CP set by changing the value of the global parameter, but in the second embodiment In the embodiment, the shape parameter selected by the selection unit 240 is further used to determine the initial position. because Figure 18 Step S510 to step S540 of the same as in the first embodiment Figure 12 Step S310 to step S340 are the same, so the description is omitted. However, in the second embodiment, the minimum norm temporary setting position determined in step S340 is referred to as a "reference temporary initial position".

[0115] Selection section 240 ( figure 1 ) select feature quantities based o...

Deformed example 1

[0123]In the first embodiment, the selection of the feature value by the selection unit 240 is performed after the convergence determination of the difference image Ie by the feature position detection unit 220 (step S430), but the selection time of the feature value by the selection unit 240 is not particularly Limitation can also be performed before convergence judgment. Also in the second embodiment, the selection unit 240 may select the feature amount at any time after the setting unit 210 sets the reference temporary initial position (step S540 ) in the same manner.

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Abstract

An image processing apparatus is provided for detecting coordinate positions of characteristic portions of a face image in a target image. The image processing apparatus includes a face area detecting unit that detects an image area that includes at least a part of a face image as a face area from the target image, a setting unit that sets a characteristic point used for detecting a coordinate position of the characteristic portion in the target image based on the face area, a selection unit that selects a characteristic amount used for correcting a setting position of the characteristic point out of a plurality of characteristic amounts that is calculated based on a plurality of sample images including face images of which the coordinate positions of the characteristic portions are known, and a characteristic position detecting unit that corrects the setting position of the characteristic point so as to approach the coordinate position of the characteristic portion in the image by using the selected characteristic amount and detects the corrected setting position as the coordinate position.

Description

technical field [0001] The present invention relates to an image processing device that detects the coordinate position of a feature part of a face contained in an image of interest. Background technique [0002] Active Appearance Model (Active Appearance Model, also abbreviated as "AAM") is known as a method of modeling visual objects. In AAM, for example, through the statistical analysis of the positions (coordinates) and pixel values ​​(such as brightness values) of the feature parts (such as the corners of the eyes, the tip of the nose, or the outline of the face) contained in a plurality of sampled images, it is possible to set the A face image is modeled using a shape model representing the face shape determined at the positions of the above-mentioned characteristic parts, or a texture model representing "Appearance" in the average shape. According to AAM, arbitrary face images can be modeled (synthesized), and the positions of feature parts of faces included in the i...

Claims

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Application Information

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IPC IPC(8): G06T7/00G06K15/02
CPCG06K9/00248G06T7/0046G06T2207/30201G06K9/621G06T7/75G06V40/165G06V40/175G06V10/7557
Inventor 碓井雅也松坂健治
Owner SEIKO EPSON CORP
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