Parameter

[cong-code]

Hi, author, I'd like to consult a few hyperparameters given in the code：radius, near, far, fov, umin, umax, vmin, vmax, and what they mean. How do you determine these for different X-rays devices。(u, v) denotes the center of patch? I understand that (u, v) is the central coordinate of patch, why is the Angle given.

[Abril Corona-Figueroa]

Hi, those parameters correspond the camera/scene. Near and far are the scene bounds (you can find more on this from NeRF's original repo), radius depends on these two. u and v are for azimuth and polar angle, which are set in ranges for a rough distribution of the camera poses. And fov is the field of view. You will find also useful the original graf repo for how these are set for different datasets.

[cong-code]

Dear author：         I am very happy to receive your reply.  The camera/scene parameters of graf correspond to the natural image, but there should be differences between the camera in X-ray imaging. For example, I think the x-ray imaging near and far are set to 7.5, 12.5 seems not suitable, which is equivalent to a human body thickness of only 5. I don’t know if I understand it correctly.        Thanks and regards. my name: Wengcong zhang ***@***.***

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------------------ 原始邮件 ------------------ 发件人: "abrilcf/mednerf" ***@***.***>; 发送时间: 2023年5月31日(星期三) 晚上11:35 ***@***.***>; ***@***.******@***.***>; 主题: Re: [abrilcf/mednerf] Parameter (Issue #12) Hi, those parameters correspond the camera/scene. Near and far are the scene bounds (you can find more on this from NeRF's original repo), radius depends on these two. u and v are for azimuth and polar angle, which are set in ranges for a rough distribution of the camera poses. And fov in the field of view. You will find also useful the original graf repo — Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you authored the thread.Message ID: ***@***.***>

[cong-code]

Dear author：         I am very happy to receive your reply.  The camera/scene parameters of graf correspond to the natural image, but there should be differences between the camera in X-ray imaging. For example, I think the x-ray imaging near and far are set to 7.5, 12.5 seems not suitable, which is equivalent to a human body thickness of only 5. I don’t know if I understand it correctly. Moreover, In the test phase, when given a 0-degree anterior-posterior view, how to specify how to render and predict the lateral view, render_xray_G.py is a randomly generated pose parameter, and the desired pose cannot be specified.        Thanks and regards. my name: Wengcong zhang E-mail: ***@***.***

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------------------ 原始邮件 ------------------ 发件人: "abrilcf/mednerf" ***@***.***>; 发送时间: 2023年5月31日(星期三) 晚上11:35 ***@***.***>; ***@***.******@***.***>; 主题: Re: [abrilcf/mednerf] Parameter (Issue #12) Hi, those parameters correspond the camera/scene. Near and far are the scene bounds (you can find more on this from NeRF's original repo), radius depends on these two. u and v are for azimuth and polar angle, which are set in ranges for a rough distribution of the camera poses. And fov in the field of view. You will find also useful the original graf repo — Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you authored the thread.Message ID: ***@***.***>