【Lynda高精度字幕由CGSUB.COM独家发布】 Photomatix has excellent deghosting tools. Photomatix具有良好的deghosting工具。
Deghosting is the process of removing those semi-transparent ghosty artifacts that Deghosting是删除那些半透明鬼的工件的过程
occur in a final HDR merge when something in your scene moved between frames. 发生在最后一个HDR合并时帧之间在你的场景。
And we already did a Deghosting demo of these three images using Photoshop and 我们已经做了一个Deghosting演示使用Photoshop和这三个图像
we're about to do the same demo using Photomatix. 我们要演示使用Photomatix做同样的事情。
If you didn't see the Photoshop version, let me just show you the images real quick. 如果你没有看到ps版,让我给你快速的图像。
I'm shooting these kids and they had the nerve to move between frames, can you believe that? 我拍摄这些孩子和他们的神经之间移动帧,你能相信吗?
I went back when I was a kid and someone who was shooting a bracketed set of me, 我回去当我还是个孩子的时候,拍摄一组括号的我的人,
I knew enough not to move. But with these kids these days, I just don't get it. 我不知道足够的移动。但这些孩子这些天,我只是不明白。
Anyway, you can see his arms are flapping around there and his head is turning, 无论如何,你可以看到他的手臂是扑在那里,他的头转动,
and what that means is when I merge I am going to see ghosty arms and heads, 这意味着当我合并会看到鬼的手臂和头部,
and I don't want that. So let's go to it. 我不希望这样。所以让我们去。
I'm going to select these three images, drop them on to Photomatix, just like I normally would. 我要选择这三个图片,把它们Photomatix,就像我通常会。
Tell it to merge for HDR processing. These are the images I want to work with, 告诉它为HDR合并处理。这些图片我想工作,
and here I'm in my Preprocessing Options. I want to align. 我在我的预处理方案。我想要对齐。
I want to reduce noise. 我想减少噪音。
I also want to remove ghosts. 我也想删除鬼魂。
I have two options, Automatically or with Selective Deghosting, which they 我有两个选择,自动或选择性Deghosting,它们
list as recommended. 推荐列表。
I definitely recommend this also. 我绝对推荐这也。
Sometimes you get lucky with Automatic and it works, but the selective 有时你得到幸运的自动和它的工作原理,但选择性
deghosting tool is so easy to use. deghosting工具很容易使用。
There's no reason not to just do this somewhat manual process. 没有理由不这样做有点手动过程。
So I hit the Preprocess button and it goes through a good amount of the HDR 所以我点击预处理按钮,它通过大量的HDR
merging process that it would normally have to do, even if I was not Deghosting. 合并过程,通常要做的,即使我不是Deghosting。
It's reducing noise. It's aligning. 这是减少噪音。这是调整。
When it's done with that, there's going to be an intermediate step where 当它结束的时候,会有一个中间步骤
I'm going to have the chance to drive the deghosting feature before it does its final merge. 我要有机会推动deghosting特性之前,它最终的合并。
And here it is, this is the Selective Deghosting dialog box. 是这样的,这是选择性Deghosting对话框。
Right off the bat, notice there's very good help information over here. 马上,请注意这里很好的帮助信息。
A link to an HTML tutorial, a link to a video tutorial. You can look at those or 链接到一个HTML教程,视频教程的链接。你可以看看这些或
you can just listen to me, and I've also got some written instructions here. It's pretty easy. 你可以听我的,我也有一些书面指示。它很简单。
First let's take a look at the ghosting problem. Look at this kid. 首先让我们看一下重影问题。看看这个孩子。
He's got a little bit of an extra head, he's got a ghosting arm, he's got an extra foot, 他有一点额外的头,他有重影的手臂,他有一个额外的脚,
he's had better days. 他是最好的日子。
These two kids though while there are not obvious ghosting problems around 这两个孩子虽然没有明显的重影问题
them, but they are still suffering from some ghosting issues. 他们,但他们仍然遭受一些重影问题。
Their faces are a little bit out of focus because there are actually three versions. 他们的脸有点模糊的,因为实际上有三个版本。
They moved very slightly. There are basically three versions of these two kids 他们非常轻微。基本上有三个版本的这两个孩子
just stacked on top of each other. 只是堆在一起。
So I need to deghost all of three. 所以我需要deghost所有三个。
Let's start with this one, which is very obvious. 让我们从这个开始,这是非常明显的。
All I do is click and start dragging with my mouse and as I do, I leave this 所有我要做的就是点击并开始拖动鼠标,我做,我离开这
little bit dotted line, so I'm just circling this kid and as you'll notice I'm 虚线,我只是环绕这孩子,你会注意到我
not being particularly picky or careful. 不是特别挑剔或谨慎。
What I'm doing with this process is just clueing Photomatix into where the 我在做什么,这个过程就是线索Photomatix进的
ghosting problem is. 重影问题。
Once I've circled him, I then Ctrl+ Click or right-click if I'm using a 一旦我环绕他,然后按Ctrl +单击或右键单击如果我使用
two-button mouse or using Windows. 鼠标或使用Windows。
And I get this popup menu. 我得到这个弹出菜单。
I can mark selection as ghosted area. 我可以选择标记为虚反射区。
When I do that, Photomatix now knows this is an area it needs to consider for deghosting. 当我这样做,Photomatix现在知道这是一个区域deghosting需要考虑的。
Now I could go ahead and circle the other two and head off to do my final processing, 现在我可以继续绕着其他两个,去做我最后的处理,
but I'm curious to know if this is really working, if I'm getting a good deghosting. 但我想知道如果这真的是工作,如果我得到一个好的deghosting。
So I'm going to preview Deghosting by clicking this button. 所以我要预览Deghosting通过点击这个按钮。
It's going to think for a minute, and then bang, there it is. 它想了一会儿,然后爆炸,在这里。
Look, his extra head's gone. 看,他的额外的头走了。
His arms are sharp. 他的胳膊都被锋利的。
His extra foot has gone. 他额外的脚了。
The pattern on his shirt has sharpened up, because there was some overlap there. 他衬衫上的模式加剧了,因为有一些重叠。
That was leading to some ghosting effects that were basically just making 这是导致基本上只是做一些重影效果
for a soft focus. 对于一个软的焦点。
I'm going to return to Selection mode, so that I can move on to the other kids 我要回到选择模式,这样我就能继续其他的孩子
because I'm satisfied with that one. 因为我满意。
If I did not like the way he turned out, I could simply right-click within this 如果我不喜欢他,我只需右键单击在这
area over here and I'll just show you I can right-click right here, we're 区域在这里,我就告诉你我可以右键单击这里,我们
going to mark this as a ghosted area, and now I'm going to remove selection. 这个标记为一个ghost区域,现在我要删除选择。
That takes it off and now I can start over and I promise you I won't make that 需要它,现在我可以重新开始,我向你保证我不会做
mistake again. I will finish this deghosting lasso here. 再次错误。我将完成这个deghosting套索。
Now I don't know if you noticed, but if I just let and go off the mouse button, 现在我不知道你是否注意到,但如果我放开和鼠标按钮,
it automatically closes it so I don't have to go all the way back up to the top again. 它会自动关闭,所以我没有去再次回到顶部。
Again, I'm circling this kind of roughly. 再说一次,我在这种约。
Mark selection as ghosted. Watch him very closely right in here as I click the 选择标记为已。密切关注他在这里点击
Preview deghosting button. deghosting预览按钮。
And there, kis his face just sharpened up. That one maybe a little 克义斯,他的脸就尖锐起来。这个可能有点
harder for you to see in the small window size that this video will ultimately be presented. 困难对你看到的这个视频小窗口大小,最终将。
Circling the last one here and notice I'm now overlapping with the first one 盘旋在这里最后一个注意我现在与第一个重叠
and that simply doesn't matter. Photomatix is smart enough to figure out which is 这根本不重要。Photomatix是找出哪些是足够聪明
which and how to separate all this stuff. 以及如何单独所有这些东西。
So circle him, right-click, and Mark selection as ghosted. 所以圆他,右键单击,并选择标记为已。
You know, I trust that it's working well. 你知道,我相信,它运行得很好。
I'm now going to bother previewing. I'm ready to just hit OK. 我现在会打扰预览。我准备就点击确定。
Before I do that, let's take a look at these two controls down here. I can zoom 在我之前,让我们看看下面这两个控件。我可以放大
in to try and get a better view. 在试图得到更好的视图中。
If I don't know where my ghosting is, this is a great way to get a quicker or 如果我不知道我的重影,这是一个很好的方式或更快
a more detailed look. 更详细的看。
I have a Brightness control here. 我在这里有一个亮度控制。
As you've probably already discovered with some of your HDR merge, it is very 正如你可能已经发现一些你的HDR合并,它非常
often they come out of the merging process very dark. 通常他们的合并过程很黑。
That can make it difficult to see if you have a ghosting problem. 能使它很难看到如果你有重影的问题。
So I can crank the brightness up just to make my image easier to see. 所以我可以曲柄亮度使图像更容易看到。
This is not a setting that will impact my final merge in any way. 这不是一个设置将影响我最后合并以任何方式。
It's just a pre-visualization tool to make it easier for me to see any ghosting 它只是一个pre-visualization工具来方便我去看任何重影
problems that I might have. 我可能的问题。
So I'm going to hit OK and now it's extracting ghosting information. 我要点击确定现在提取重影的信息。
It's merging into HDR. 这是合并到HDR。
Basically what it's doing, is it's doing its normal HDR merge process and then 基本上这是做什么,是做正常HDR合并过程
taking that extra deghosted stuff and layering that back on, blending it 采取额外的deghosted东西和分层,混合
together, making sure that I have a very pretty image. 在一起,确保我有一个非常漂亮的形象。
There's the 32-bit version and then it immediately tone maps it into this. 有32位版本,然后立即基调将它映射到这个。
And let's just zoom in here and sure enough, look there. He doesn't have a 我们放大,果然,看那里。他没有
ghosting problem, he's very sharp, he has a little bit of a chromatic aberration problem. 重影问题,他很锋利,他有一点点的色差问题。
There are some purple fringing in here, some green fringing there. 这里有一些紫色边缘,一些绿色的边缘。
I can take that out in Photoshop. 我可以带在Photoshop中。
It sure looks good. 它肯定看起来不错。
If you dig around in this image though, what you will find is down here we 如果你挖在这张照片,你会发现我们
have a noise problem. 有噪音的问题。
I can take care of that in post processing. I'm not going to worry about that now. 我可以照顾,在后期处理。我就不担心了。
This is zooming in pretty close, so I'm not going worry too much about whether 这是放大很接近,所以我不会过于担心是否
that noise is even a problem until I do a print and see if it actually is an 噪声是一个问题,直到我做印刷,看看它实际上是一个
issue that needs to be fixed. 问题,需要修复。
So that's deghosting in Photomatix. Play with it. 这就是deghosting Photomatix。和它玩。
Actually try and contrive some tests that force a ghosting problem, so that you 试着设计一些测试,迫使重影问题,这你
can see how much you can correct it. 可以看到有多少你可以纠正它。
Because once you know how much deghosting latitude you have, you might find that 因为一旦你知道你有多少deghosting纬度,你可能会发现
there are just more HDR subject matter out there for you. If you know, wow, 只有更多的HDR的主题。如果你知道,哇,
this thing is moving quite a bit, but I got confidence that I'll be able to deghost it, 这个东西是不少,但我有信心,我能deghost它,
suddenly you've got a wealth of new HDR material you can shoot. 突然你有丰富的新的HDR材料你可以开枪。
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