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Image partition threshold determination method and system, gesture judgment method and system

A threshold value and image technology, which is applied in the directions of instruments, calculations, character and pattern recognition, etc., can solve the problems of incomplete hand image, misjudgment of hand image size and position, inappropriate threshold value, etc.

Active Publication Date: 2020-05-08
PIXART IMAGING INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

image 3 is directed at Figure 1A It is obtained by performing image partitioning. However, due to an inappropriate threshold value or interference from ambient light, the hand image Img_hs becomes an incomplete image after partitioning, so the size and position of the hand image will also be misjudged

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  • Image partition threshold determination method and system, gesture judgment method and system
  • Image partition threshold determination method and system, gesture judgment method and system
  • Image partition threshold determination method and system, gesture judgment method and system

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Embodiment Construction

[0037] Figure 4 , Figure 5 with Image 6 A schematic diagram of a method for determining an image partition threshold value according to an embodiment of the present invention is drawn. Such as Figure 4 As shown, when the mechanism for adjusting the image partition threshold value is activated, a plurality of image regions will be defined for the image sensed by the image sensor, and then the corresponding partial image partition thresholds will be determined by these image regions. value (eg Figure 4 Partial image partition threshold_1, partial image partition threshold_2...local image partition threshold_n) in Then, the image is partitioned using these partial image partition thresholds to form partitioned images Img_s1 , Img_s2 . . . Img_sn. Then, score the partitioned images Img_s1, Img_s2 . . . Img_sn, and then select the local image partition threshold corresponding to the partitioned image with the highest score as the required image partition threshold accordi...

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Abstract

The invention discloses a method for determining a threshold value of an image partition, which includes: defining a plurality of image areas in a first sensing image; determining the corresponding first and second image areas according to the first and second image areas in the image area Two partial image partition thresholds; using the first and second partial image partition thresholds to respectively perform first and second image partition operations on the first sensing image to obtain first and second partitioned images; and according to the first and second partial image partition thresholds A partitioned image and the second partitioned image determine which one of the first partial image partition threshold and the second partial image partition threshold is used as the first image partition threshold of the image processor.

Description

technical field [0001] The present invention relates to an image partition threshold determination method, an image sensing system, a gesture judgment method and a gesture judgment system, in particular to an image sensing system, a gesture judgment method and a gesture judgment system capable of dynamically changing the image partition threshold. Background technique [0002] More and more electronic devices (such as smart phones and smart TVs) can perform different functions according to user's gestures. However, before performing such operations, the position of the hand must be detected first, so that the gesture can be correctly judged. Generally speaking, if the depth detector is not used, in order to determine the shot image from the images captured by the image sensor, image segmentation will be performed on the image first. A more common image partition method is to partition according to brightness. [0003] Figure 1A with Figure 1B A schematic diagram of perf...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00
CPCG06V40/28
Inventor 张柏毅
Owner PIXART IMAGING INC