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This article mainly shows you "how arcgis generates the pyramid of mpt". The content is simple and clear. I hope it can help you solve your doubts. Let me lead you to study and learn this article "how arcgis generates the pyramid of mpt".

Map image files are of the order of magnitude are relatively large, hundreds of M to several G, the first time to use arcgis to open an image file, will first create a pyramid, the pyramid contains a pile of large pictures and small pictures, so that these tools are relatively fast, after all, the image file (the image size of the following figure 380m) is a large picture with coordinates, directly open this picture, the average computer can not bear.

The image pyramid file generated by arcgis has the suffix .ovr. If the image file is relatively large, the generation speed of this file is relatively slow, and the format of this file can be directly recognized by TerraBuilder, so some images can be directly displayed when they are added to tb. You can see this attribute (Use soure) in the image attribute:

In the process of generating mpt, tb converts the arcgis pyramid of the image into its own pyramid format, and finally generates mpt.

However, in the production process of some mpt, some areas of the map will display blurred after the mpt is opened, or the mpt file cannot be opened at all. This is because there is a problem in the pyramid data conversion process, so you need to change a configuration in the image configuration, that is, do not use the arcgis pyramid, use the tb pyramid format, and change it to Image JPEG v3:

This regeneration into mpt, you need Mr. into the pyramid of tb, this is before the production process of mpt, generated after the completion of the production of mpt, after the generation of pyramids, mpt generation speed will be faster, because it is its own format, some operations are like its internal copy.

The above is all the content of the article "how arcgis generates the Pyramid of mpt". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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