Method of image conversion operation for panorama dynamic IP camera
The present invention provides a method of image conversion operation for panorama dynamic IP camera. Three wide-angle cameras are used for obtaining a panorama dynamic image, and then to be compressed and transferred through Internet to a PC/smartphone/tablet for being decompressed and image conversion operation, so that a user can use the PC/smart phone/tablet to slide a touch screen thereof for viewing the desired dynamic image.
1. A method of image conversion operation for panorama dynamic IP (Internet Protocol) camera, a dynamic image captured by three wide-angle cameras panoramically and received by a PC(Personal Computer)/smartphone/tablet via Internet is divided equally into an upper block, a middle block and a bottom block, when a browser frame of the PC/smartphone/tablet is moved by a user by sliding a touchscreen of the PC/smartphone/tablet for reading a desired dynamic image, the method comprises steps as below:
(a) if the browser frame is moved along the middle block, the dynamic image covered by the browser frame is displayed on the touchscreen of the PC/smartphone/tablet directly;
(b) if the browser frame is moved along the upper block or the bottom block, a horizontal length of the upper block or the bottom block is w, for any point (x, y) in the browser frame, a radius r and an angle θ are calculated from the coordinates x and y as below:
r √{square root over ( )}( x 2 +y 2 )
θ=arctan( y/x )
a pixel corresponding to the point (r, θ) has a distance r away from an upper edge of the upper block or an bottom edge of the bottom block, and has a distance w* (θ/360) away from a left edge of the upper block or the bottom block; the pixel is filled to the point (x, y) in the browser frame; in the same way, each point in the browser frame can be filled by a pixel in the upper block or the bottom block so that a real top dynamic image or a bottom dynamic image captured by the three wide-angle cameras is displayed in the browser frame without distortion.
2. The method of image conversion operation for panorama dynamic IP camera according to claim 1 , wherein if the browser frame is moved between the upper block and the middle block, an area ratio between the upper block and the middle block is a factor; if the area ratio for the upper block to the middle block is ≦1, no operation is needed, the dynamic image covered by the browser frame is displayed on the touchscreen of the PC/smartphone/tablet directly; if the area ratio for the upper block to the middle block is >1, then the method of image conversion operation according to claim 1 when the browser frame is moved along the upper block is employed to find the corresponding pixels for filling.
3. The method of image conversion operation for panorama dynamic IP camera according to claim 1 , wherein if the browser frame is moved between the bottom block and the middle block, an area ratio between the bottom block and the middle block is a factor; if the area ratio for the bottom block to the middle block is ≦1, no operation is needed, the dynamic image covered by the browser frame is displayed on the touchscreen of the PC/smartphone/tablet directly; if the area ratio for the bottom block to the middle block is >1, then the method of image conversion operation according to claim 1 when the browser frame is moved along the bottom block is employed to find the corresponding pixels for filling.