can not stitiching for more than 3 images. #290

all images is as follows:
[https://mos-estate-ai.oss-cn-hangzhou.aliyuncs.com/%E9%A6%99%E9%A3%98%E9%A3%98/pic_test/IMG_2948.JPG
https://mos-estate-ai.oss-cn-hangzhou.aliyuncs.com/%E9%A6%99%E9%A3%98%E9%A3%98/pic_test/IMG_2949.JPG
https://mos-estate-ai.oss-cn-hangzhou.aliyuncs.com/%E9%A6%99%E9%A3%98%E9%A3%98/pic_test/IMG_2950.JPG
https://mos-estate-ai.oss-cn-hangzhou.aliyuncs.com/%E9%A6%99%E9%A3%98%E9%A3%98/pic_test/IMG_2951.JPG
https://mos-estate-ai.oss-cn-hangzhou.aliyuncs.com/%E9%A6%99%E9%A3%98%E9%A3%98/pic_test/IMG_2952.JPG
https://mos-estate-ai.oss-cn-hangzhou.aliyuncs.com/%E9%A6%99%E9%A3%98%E9%A3%98/pic_test/IMG_2953.JPG
https://mos-estate-ai.oss-cn-hangzhou.aliyuncs.com/%E9%A6%99%E9%A3%98%E9%A3%98/pic_test/IMG_2954.JPG
https://mos-estate-ai.oss-cn-hangzhou.aliyuncs.com/%E9%A6%99%E9%A3%98%E9%A3%98/pic_test/IMG_2955.JPG]