Fast scan-type panoramic image synthesis method and device

A fast scan-type panoramic image synthesis device, comprising an original image acquiring module and an image processor,

• wherein,
• the original image acquiring module controls two cameras of a same angle of view to simultaneously acquire two original images of the same angle of view, wherein one of the two original images is an exposure-locked image and the other of the two original images is a non-exposure-locked image;
• the image processor performs HDR processing on the simultaneously acquired two original images by using the exposure-locked image as a reference image to obtain an HDR processed outcome image of a current frame;
• the image processor performs exposure compensation on the HDR processed outcome image of the current frame based on a temporary panoramic outcome image of the previous frame before image fusion;
• and
• the image processor performs image fusion and synthesis according to the temporary panoramic outcome image of the previous frame and the exposure compensated HDR processed outcome image of the current frame to generate a new temporary panoramic outcome image of the current frame,
• the image processor acquires a relative motion parameter between frames;
• the image processor calculates an overlapping area between the HDR processed outcome image of the current frame and the temporary panoramic outcome image of the previous frame according to the relative motion parameter between the two frames;
• and
• the image processor calculates grayscale values of the overlapping area between the two images and performing exposure compensation on the HDR processed outcome image of the current frame according to a calculation result of the grayscale values.