A method and apparatus for identify brightness of an image main body
An identification method and identification device technology, which are applied in image enhancement, image analysis, image data processing, etc., can solve problems such as low accuracy, low efficiency, and different identification standards, and achieve the effect of improving accuracy
Active Publication Date: 2019-02-26
GUANGDONG INTELL VISION TECH CO LTD
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However, the manual selection method is inefficient and highly subjective, and different people have different criteria for discrimination, resulting in low accuracy
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[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0034] like figure 1 As shown, a method for identifying the brightness of an image subject provided by the first embodiment of the present invention includes steps:
[0035] S101. Acquire the selected image, and extract the feature vector of the selected image through the convolution layer of CNN to obtain the first convolution feature map;
[0036] S102. Compare the first convolutional feature map with the second convolutional feature map in the pre-trained class...
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The invention discloses a method and a device for identifying the brightness of an image main body, The methods include, extracting a feature vector of the selected image to obtain a first convolutionfeature map, comparing the first convolution feature map with the trained second convolution feature map, Determines the principal category to which the principal image in the selected image belongs,calculating an area ratio of all main body images corresponding to each main body category to a selected image, taking a main body category whose area ratio exceeds a preset threshold value as a first main body category, determining a second main body category from the first main body category according to a preset priority, extracting hue values of all pixel points of all the main bodies in thesecond main body category, and determining that the main body brightness of the selected image is insufficient if the distribution range of the hue values is smaller than the preset range; Otherwise,it is determined that the main body is sufficiently bright. By implementing the embodiment of the invention, the brightness of the image main body can be automatically recognized, and the precision ofthe image recognition can be improved.
Description
technical field [0001] The invention relates to the field of digital image processing, in particular to an image screening method and device based on the recognition of image subject brightness. Background technique [0002] As the visual basis of human perception of the world, image is the carrier of all visual information and an important means for human beings to obtain information, express information and transmit information. Many technical fields are based on image processing, such as face recognition, video analysis, intelligent driving and industrial visual inspection. However, the collected images often have large ambient brightness interference, resulting in darker brightness of the main body of the collected images. [0003] In the prior art, people select images according to their intuition, reject images with darker subject brightness and retain images with brighter subject brightness based on intuition. However, the manual selection method is inefficient and ...
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IPC IPC(8): G06T7/00
CPCG06T7/0002G06T2207/20084G06T2207/30196
Inventor 邓立邦
Owner GUANGDONG INTELL VISION TECH CO LTD