Method and device for determining shadow effect and electronic device

Abstract

The embodiment of the invention provides a method and a device for determining a shadow effect, and an electronic device. The method comprises the following steps: obtaining a target picture, and decomposing the target picture into a first preset number of sub-pictures; determining a light intensity weighting center according to an image moment of the sub-picture, and determining light source position information of the target picture based on the light intensity weighting center and the geometric center of the sub-picture; generating a shadow effect of the target object according to the lightsource position information, the position information of the target object on the target picture, and the contour information. Through the method, the device and the electronic device, the light source position in the picture can be accurately and conveniently obtained, and other first-related factors are considered in the process of generating the shadow effect of the virtual object, so that theshadow effect of the virtual object is more realistic, and the immersion feeling of the user is improved.

Description

technical field [0001] The present invention relates to the technical field of image processing, in particular to a method, device and electronic equipment for determining shadow effects. Background technique [0002] Augmented Reality (AR) technology is a technology that calculates the position and angle of camera images in real time and adds corresponding images, videos, and 3D models to place virtual objects on the screen in the real world and interact with them. Users can perceive the existence of virtual objects by using AR devices. However, in the process of realizing the present invention, the inventor found that in related technologies, when rendering shadow effects on virtual objects, the shadow shape is generally only determined according to the shape of the virtual object, but in real scenes due to various factors The shape of the influence shadow generally has a certain deviation from its object body, which makes the shadow effect of the virtual object inconsist...

AI Technical Summary

Problems solved by technology

In order to avoid poor framing effect caused by shaking of the handheld device, resulting in subsequent image processing problems, or users holding the mobile phone for a long time to watch videos and resulting in physical exhaustion, it is often necessary to install the mobile phone on a fixed bracket to keep it stable. The special camera bracket is of course effective. Quite good, but the cost is expensive and the volume is large. Ordinary users often use a simple mobile phone stand to achieve the required viewfinder effect and stable support. However, the usual simple stand is located on the protective case of the mobile phone or pasted on the On the back of the mobile phone, more and more users are unwilling to use mobile phone protective cases and simple sticky brackets because of the increasingly strong glass of mobile phones, the problem of heat dissipation of mobile phones, and the aesthetics of mobile phones.

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