Better estimates of lens distortion and focal length will be obtained if the grid is positioned accurately over as much of the imagespace as possible.
更好的估计和焦距的透镜畸变能获得网格定位准确在尽可能多的图像尽可能的空间。
3
Some image-advertising start-ups, including ImageSpace Media Inc. and GumGum Inc., place text and so-called display ads within the images themselves, typically on the bottom section or corner.
包括Image Space Media Inc.和GumGum Inc.在内的一些图片广告初创企业还在图片内放置文本和“展示广告”(display advertising)，通常位于图片的底部或角落。