APPARATUS, METHOD, AND PROGRAM FOR FACE FEATURE POINT DETECTION
First Claim
1. A face feature point detection apparatus, comprising:
- an image capturing means capturing a face image;
an edge calculating means calculating edge values, each edge value indicating a luminance change in a direction, in the face image; and
a detection target determining means scanning an edge image, which is created by arranging the edge values for corresponding pixels calculated by the edge calculating means based on pixel arrangement of the face image, with an image window, the image window being an aggregation of selected pixels formed in a predetermined shape, the detection target determining means determining a position of the image window having a largest weighted sum of weighted sums to be a detection position where a detection target is present, providing that the weighted sum is calculated by multiplying the edge value which corresponds to each pixel in the image window by a predetermined value defined on a per-pixel basis and adding up all products of the edge value and the predetermined value.
1 Assignment
0 Petitions
Accused Products
Abstract
A face feature point detection apparatus includes an image capturing device, an edge calculating unit calculating edge values indicating a luminance change in a direction, and a detection target determining unit scanning an edge image, which is created by arranging the edge values for corresponding pixels based on pixel arrangement of the face images, with an image window being an aggregation of selected pixels formed in a predetermined shape, the detection target determining unit determining a position of the image window having a largest weighted sum of weighted sums to be a detection position where a detection target is present, providing that the weighted sum is calculated by multiplying the edge value which corresponds to each pixel in the image window by a predetermined value defined on a per-pixel basis and adding up all products of the edge value and the predetermined value.
-
Citations
12 Claims
-
1. A face feature point detection apparatus, comprising:
-
an image capturing means capturing a face image; an edge calculating means calculating edge values, each edge value indicating a luminance change in a direction, in the face image; and a detection target determining means scanning an edge image, which is created by arranging the edge values for corresponding pixels calculated by the edge calculating means based on pixel arrangement of the face image, with an image window, the image window being an aggregation of selected pixels formed in a predetermined shape, the detection target determining means determining a position of the image window having a largest weighted sum of weighted sums to be a detection position where a detection target is present, providing that the weighted sum is calculated by multiplying the edge value which corresponds to each pixel in the image window by a predetermined value defined on a per-pixel basis and adding up all products of the edge value and the predetermined value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A face feature point detection method, comprising:
-
an edge calculating step calculating edge values, each edge value indicating a luminance change in a direction, in a face image; and a detection target determining step scanning an edge image, which is created by arranging the edge values for corresponding pixels calculated by the edge calculating step based on pixel arrangement of the face image, with an image window, the image window being an aggregation of selected pixels formed in a predetermined shape, the detection target determining step determining a position of the image window having a largest weighted sum of weighted sums to be a detection position where a detection target is present, providing that the weighted sum is calculated by multiplying the edge value which corresponds to each pixel in the image window by a predetermined value defined on a per-pixel basis and adding up all products of the edge value and the predetermined value.
-
-
12. A program instructing a computer to function as;
-
an edge calculating means calculating edge values each edge value indicating a luminance change in a direction, in an face image; and a detection target determining means scanning an edge image, which is created by arranging the edge values for corresponding pixels calculated by the edge calculating means based on pixel arrangement of the face image, with an image, window, the image window is an aggregation of selected pixels formed in a predetermined shape, the detection target determining means determining a position of the image window having a largest weighted sum of weighted sums to be a detection position where a detection target is present, providing that the weighted sum is calculated by multiplying be edge value which corresponds to each pixel in the image window by a predetermined value defined on a per-pixel basis and adding up all products of the edge value and the predetermined value.
-
Specification