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Face real time detecting method based on video and device thereof

A real-time detection and detection method technology, applied in the field of face detection technology, can solve problems such as jumping, difficult face detection, pause, etc., to achieve the effect of ensuring accuracy and reducing computational complexity

Active Publication Date: 2011-06-22
SPREADTRUM COMM (SHANGHAI) CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] However, the inventors of the present invention have found that, in the existing face detection technology, each frame is detected by searching the entire area with a fixed step size, so the computational complexity of the face detection process is relatively high
Most of the handheld devices are embedded systems with relatively poor computing power and weak storage capacity, so it is difficult to realize real-time face detection, and there will be delays, pauses and jumps.

Method used

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  • Face real time detecting method based on video and device thereof
  • Face real time detecting method based on video and device thereof
  • Face real time detecting method based on video and device thereof

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Embodiment Construction

[0028] In the following description, many technical details are proposed in order to enable readers to better understand the application. However, those skilled in the art can understand that without these technical details and various changes and modifications based on the following implementation modes, the technical solution claimed in each claim of the present application can be realized.

[0029] In order to make the purpose, technical solution and advantages of the present invention clearer, the following will further describe the implementation of the present invention in detail in conjunction with the accompanying drawings.

[0030] The first embodiment of the present invention relates to a video-based real-time face detection method, which can be applied to handheld devices, such as mobile devices. In this embodiment, the video image frame is divided into two types of frames: full detection frame and predictive detection frame in advance. The full detection frame is a...

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Abstract

The invention discloses a face real time detecting method based on video and device thereof, belonging to the field of multimedia. In the invention, a video image frame is divided into a full detection frame and a predetermined frame; the type of the current input video image frame is judged according to the frame interval between the current input video image frame and the former full detection frame; and a corresponding detection way is adopted. As video sequence has predictable characteristics in a time-space domain, parts of the video image frame are detected by searching different regions by different step lengths, so that the method can efficiently reduce the searching time in the detecting process, avoid the shortage that the general algorithm based on AdaBoost cascade algorithm searches all the regions by fixed step length, greatly reduce the calculating complexity in the detecting process and guarantee the accuracy of the detection.

Description

technical field [0001] The invention relates to the field of multimedia, in particular to face detection technology in the field of multimedia. Background technique [0002] In recent years, handheld devices such as mobile phones and digital cameras have become more and more popular among consumers due to their portability and rich multimedia applications. With the increasing popularity of handheld devices, people's demand for face detection, which is the basic technology of many multimedia applications, is becoming more and more urgent. [0003] The so-called face detection refers to the process and method of detecting the position, direction, size and number of faces of all existing faces in multimedia data (including images and videos, etc.). Face detection is of great significance and can be applied to fields such as face recognition, video surveillance, and content-based retrieval, and is an essential component of the above-mentioned applications. However, the human f...

Claims

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Application Information

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IPC IPC(8): G06K9/46G06T7/60
Inventor 罗小伟林福辉
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
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