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rhino:perspectivematch [2015/09/14] |
rhino:perspectivematch [2020/08/14] (current) |
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+ | ======Rhino Perspective Match to Image PMatch====== | ||
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+ | You have a perspective picture of something and an accurate 3D model. You want to set the projection in a Rhino perspective viewport so that the model lies on top of the picture. | ||
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+ | **Step 1:** Open the file with the model in it and put add perspective picture as a wallpaper image in one of the viewports. | ||
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+ | **Step 2:** Click in the viewport with the wallpaper image (to make it the active viewport), and run the PerspectiveMatch command. | ||
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+ | **Step 3:** Carefully pick a point on the wallpaper image, then carefully pick the corresponding 3D point on the model. Keep picking pairs of image/3D points until you have at least 6 pairs. | ||
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+ | **Step 4:** Press enter. | ||
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+ | \\ | ||
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+ | ====Tips and tricks==== | ||
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+ | * Pick **carefully**. Accurate picking gives accurate results. Sloppy picking gives you garbage. | ||
+ | * Make the image view large. This aids in accurate image point picking. | ||
+ | * If possible, pick point pairs where an end or point snap can be used to select the 3D point. This aids in accurate 3D point picking. | ||
+ | * Pick points that are spread out in all dimensions. You get nice results if you pick the corner points. You get less accurate results if you concentrate your picking to smaller sub-regions. | ||
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+ | ====Restriction==== | ||
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+ | - The image must be a true perspective image. Photos taken with lenses that are designed to remove perspective distortion will not work. | ||
+ | - The center of the image must be on the camera' | ||
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+ | -- Dale Lear | ||
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