one image processing problem.# EE - 电子工程
W*o
1 楼
what is focal point? how to find it from a set of image files?
How to do it in C++?
any suggestion? thanks.
How to do it in C++?
any suggestion? thanks.
L*e
2 楼
focal point就是焦点吧。如果成像是光源的空间fourier变换，该
像所在的位置就是focal plane.
【在 W*******o 的大作中提到】
: what is focal point? how to find it from a set of image files?
: How to do it in C++?
: any suggestion? thanks.
像所在的位置就是focal plane.
【在 W*******o 的大作中提到】
: what is focal point? how to find it from a set of image files?
: How to do it in C++?
: any suggestion? thanks.
W*o
3 楼
如果我有一系列的图片(index, 0, 1, 2, 3, 4, ...),分别是从不同的距离对object所
拍摄的,这些图片有的清楚,有的模糊,怎样才能从这些图片中估计出焦点呢?注意这些图
片不一定在焦平面上拍摄,所以估计出来的焦点可以是floating point.
拍摄的,这些图片有的清楚,有的模糊,怎样才能从这些图片中估计出焦点呢?注意这些图
片不一定在焦平面上拍摄,所以估计出来的焦点可以是floating point.
L*e
4 楼
if you took the course of physics optics, you will see how the
patterns are different from each other. one of them is the fourier transform
of the source.
【在 W*******o 的大作中提到】
: 如果我有一系列的图片(index, 0, 1, 2, 3, 4, ...),分别是从不同的距离对object所
: 拍摄的,这些图片有的清楚,有的模糊,怎样才能从这些图片中估计出焦点呢?注意这些图
: 片不一定在焦平面上拍摄,所以估计出来的焦点可以是floating point.
patterns are different from each other. one of them is the fourier transform
of the source.
【在 W*******o 的大作中提到】
: 如果我有一系列的图片(index, 0, 1, 2, 3, 4, ...),分别是从不同的距离对object所
: 拍摄的,这些图片有的清楚,有的模糊,怎样才能从这些图片中估计出焦点呢?注意这些图
: 片不一定在焦平面上拍摄,所以估计出来的焦点可以是floating point.
W*o
5 楼
I have not take that course yet. But this is the problem I need to finish
urgently.
So basically, the Fourier transforms of different pictures at different
distance can be used to predict the focal point, am I right? So I can take
FFT of each image and compare, but what is the target? I mean the fourier
transform of the actual source which I dont know.
Thanks.
transform
【在 L*****e 的大作中提到】
: if you took the course of physics optics, you will see how the
: patterns are different from each other. one of them is the fourier transform
: of the source.
urgently.
So basically, the Fourier transforms of different pictures at different
distance can be used to predict the focal point, am I right? So I can take
FFT of each image and compare, but what is the target? I mean the fourier
transform of the actual source which I dont know.
Thanks.
transform
【在 L*****e 的大作中提到】
: if you took the course of physics optics, you will see how the
: patterns are different from each other. one of them is the fourier transform
: of the source.
相关阅读
请问有qualcomm的前辈们可以帮忙投个简历吗?请问PHD找工业界的工作, publication写不写啊?请教LED的几个术语如何科学便捷备份同求助转专业请问这些仪器，大概什么公司会有？有人是做Optical/optoelectronics Engineer的吗？麻省招有线通信方向Software Engineer/Test Engineer发个LA附近嵌入式软件方面的招人信息求教转专业到底该补充什么知识~哪位好心人能给偶介绍一个电路设计方面volunteer 的工作急需设计PCB板 谢谢请问哪些学校电力方向不错？数码照片中像素的坐标这个MIPS有他CEO说的那么好吗？ (转载)问下升学校找教授写推荐信发链接前还要提前说一声么？Electrophoretic photoresistfourier transform of a fourier transform=?6T SRAM和10T SRAM的区别