DxO助力,Palm Pre 的摄像效果可能很棒

寂夜清风

根据一篇英文资料看到,
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Palm 在Pre上配置的情况是: 320万像素的摄像头, DxO 图像处理技术,加大了景深和视角(宽度), LED补光
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4 {2 o1 p0 _! ~' j2 v9 Q, Q1 P对于很多人来说,Palm在硬件上做得仍然落后于时代,他们根本没象Nokia那样搞个500万像素的镜头,而且不是自动对焦(AF)的,实在让很多人失望.

但是也许实际情况没那么糟糕,我们不妨看看他们采用的一些提升措施,..关注一下DxO Labs的图像处理技术,
DxO Labs是一家专门研究图像技术的机构,他们的技术被Canon, Nikon, Sigma等众多大牌企业用在单反相机(DLSR)上提升出片效果
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$ R$ G) J  ]4 J. k从目前DxO技术在其他企业和领域的广泛应用和良好表现来说,也许Pre的摄像效果比我们很多人想像的要好很多,在一定程度上甚至可以超过很多标称500万摄像头的手机拍出的图片.

寂夜清风

Tucked away in the announcements for Palm's Pre, a remark about the new device's camera caught my eye: "Camera: 3.2 megapixel, DxO Image Processing and extended depth of field, LED flash." The geeks among us don't need any explanation, but for everyone else, here's a translation: A fixed-focus camera with sophisticated image processing to make the pictures look better than you'd otherwise expect. Indeed, a recent post on Palm's WebOS blog goes into great technical detail - and speculation - about the technology that's being incorporated.

Palm Pre uses the latest imaging correction software from DxO Labs. DxO is a leading player in the field of image analysis and correction. It is used and incorporated by all major photo brands like Canon, Nikon, Sigma, etc., in their digital SLR cameras to do image processing and correction. DxO offers a number of different products including software post-processing packages, image quality analyzer and, most important of all, embedded imaging solution which rests inside the device and does live processing of your beautiful shots.
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What's possible with such embedded processing could amaze, for sure, but we'll have to wait and see how much and which of DxO's technology lands inside. The French company DxO blazes trails in software that fixes digital cameras’ inherent (and otherwise) troubles. Their software goes “on-chip” so the camera does the work before the picture lands on the screen.
, C. d/ \% p2 @0 B. v" pFor its part, the Pre camera's basic specification, 3.2 megapixels with an LED "flash" to help out in low light, is no slouch. I have many digital images of 3.3 megapixels. The prints are 11x14 and glorious. However, they had the advantage of quality lenses - Carl Zeiss, in fact - and non-fixed-focus. They did not have any DxO processing, but could probably have been even better for it.
* ?. E2 |, L* x1 g& P: Z( u0 fThere has been some grousing about "only" 3 megapixels. Some "other" phone cameras tick up more than twice that. Besides megapixels, however, many other factors contribute to the quality of a digital camera's pictures. These include the physical size of the imaging "chip" - rarely stated in anybody's specifications sheets, the software that runs the imager, and the quality (or not) of the lens. With phone cameras, there's not much room for a great lens, so something else has to take up the slack. In the Pre, it appears, embedded software will do exactly that.
5 V" Y5 |2 t( B7 SAccording to the blog post, the Pre will probably use DxO's IPE - Image Processing Engine - to assist low light photos and improve depth of field. The company offers other options, but this one specifically addresses depth of field. That's how much of a scene, front to back, is in focus and where and how the unsharpness, also called bokeh, occurs. Fixed-aperture lenses and any lens that operates in low light suffer from poor depth of field - not much of what's in a scene is sharp. In real cameras, the solution is to "stop down" the lens aperture. Camera phones "stop down" by electronically adjusting their sensitivity to light, so there's no benefit to depth of field, which is a mathematical function dependent on distance, focal length, and aperture.
The other DxO capabilities are even more tantalizing. The most interesting is "Global Adaptive Lighting." This digitally looks around in an image and improves shadow and highlight detail by equalizing the exposures. I have filters for Adobe Photoshop that do this, and a very fast computer to run them on. They take a LONG time to do their thing, but the result is often stunning. So, if Palm's sticking this in the Pre hardware, let me at it!
% E$ P3 k( e" \  o  Q% @8 L5 S: `This whole digital processing thing has been around for a long time, but it got lots of attention back when the Hubble Telescope  had an optical problem that NASA temporarily solved with digital manipulation till a physical fix could be made. Celebrated history notwithstanding, digital image processing isn't a substitute for optical excellence, and as with everything else, there's no free lunch. I’m not throwing out my digital SLR’s, but I do look forward to shooting with the Pre.
About the picture. The accompanying illustration is from DxO’s website, which includes excellent, however highly technical, discussions of the whole process. This image might not apply to the Pre, exactly. But then again, it might.
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; e3 n: W& e2 d  w8 [# F0 Ohttp://www.precentral.net/looking-forward-pre-camera

anyinwind

http://www.handheld.eetchina.com ... 001_NP_ca04dc10.HTM
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DxO Labs日前宣布推出了3个专为拍照手机应用而设计的新型嵌入式图像处理解决方案，这些解决方案是以硅 IP 形式授权给硅厂商的。这些新的解决方案有助于移动电话设计者克服那些在清晰度较高、尺寸较小的相机模块中使用的日益缩小的像素的局限性。这是通过将最佳的数字光学技术（亦称为景深扩展或 EDoF）与反锯齿去马赛克 (anti-aliasing demosaicing)、传感器与像素级噪音补偿以及 DSC 级自动曝光与自动白平衡等业界最佳的图像处理技术相结合而实现的。

8 t, f# W5 M( [7 N这三种新的解决方案分别是 DxO IPE、DxO ISP 以及 DxO DOP 系列解决方案。DxO IPE 系列解决方案将最新的数字光学技术与 DSC 级图像信号处理结合起来，以获得最佳的总体低光图像性能。这种最新的数字光学技术为低光镜头设计、景深扩展以及低端镜头设计提供支持。DxO ISP 系列在无需执行数字光学的条件下提供 DSC 级图像处理；而 DxO DOP 系列则在无需图像处理功能的前提下提供数字光学处理。

! c3 c$ j  t& y- T; U所有这些解决方案都使通过使用 DxO 专有的、高度可配置与可编程的 SIMD 处理器内核而执行的，同时在功耗、体积以及外形方面都实现了优化。由于其基础架构的灵活性，这些解决方案以多种配置形式推出，以支持从 1.3MP 到 12MP 的清晰度。这些解决方案可嵌入在 CMOS 图像传感器芯片上、相机模块内的辅助芯片上，亦或是基带或应用处理器芯片上。
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DxO Labs 首席执行官 Jerome Meniere 表示：“尽管当今的日益缩小的像素在性能方面存在着局限性，但是我们相信凭借 DxO 图像处理技术在拍照手机等嵌入式平台中的应用，图像质量可以和数码相机的拍摄效果相当。通过我们在 DxO 内构建 RTL 与硅设计性能方面的投资，我们现在能够向那些希望将它们嵌入到一种易于整合并能缩短上市时间的完整而公认的解决方案中的 CMOS 图像传感器、多媒体处理器以及其他 SoC 中的客户提供这些技术。”

7 w8 F& \( v& o" E购买一份授权与专利使用费合同，DxO Labs 将提供：
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-- 一种针对 RTL 与微码的系统级、精确到比特的 C 模式；

  ]9 h5 Z' ^2 p-- 一份硬件整合指导，包括外部接口（硬件 I/F、定时、寄存器和存储器）；
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-- 具有100%覆盖的配置 RTL（混淆结构 Verilog）；
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-- 认证覆盖与指导方针（包括文件、认证矢量和整合工具）；

' J. A) v7 g+ a* @% w* k-- 推荐的芯片测试方法；

-- 一份包括微控制器固件与库集描述的软件整合指导；

0 E& E8 a% L  d: A' b-- 微控制器固件与库集；
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% G& ]+ B! T5 v$ W* V& [1 h. E-- 一份镜头设计，当与系统硬件相匹配时，该设计符合光学系统规格（仅适于 DxO DOP 和 DxO IPE 系列）；

. a' U4 O! K5 d+ n4 x$ @% M2 j: S  Y2 P-- 面向芯片规格、RTL 整合与认证、固件整合与认证、芯片终端、系统级认证、镜头样本生产与认证、芯片认证以及图质调整的支持；

5 j; w, r. _1 `1 W: [8 k: H-- 一旦收到首批样本，DxO Labs 还将对镜头与传感器系统进行校准。这一校准测试会产生其他的二进制（编码与数据），这些二进制将使用匹配的镜头用于最终相机模块的 ROM 或 RAM 整合。
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这些解决方案可即刻整合进客户芯片设计。欲了解有关这些解决方案的更多信息，请登陆：http://www.dxo.com/intl/embedded_imaging 或发电邮至：info.embedded@dxo.com 。

ursace

太过专业了，大多看不懂，让我们对即将到来的真机及真机的拍摄样张充满期待吧！

trbtone

不如来照片测评实在

野性呼唤

不知道胖友们有没有拿现在的treo和Nokia等作比较。兄弟试过，30万像素的650拍照，绝对比NokiaN73效果好。2m距离效果相当，0.2m时N73拍马都赶不上！

野性呼唤

少说了！期待新机

alexplee

从来没有对手机上的照相功能有啥太多期望.能照清楚就行了.也就是随手取个证啥的. 专门照相还是DSLR吧

hxsjay

无限期待中......

慢斯条理

对摄像头不太感冒 我觉得最好有无摄像头的版本 我想要

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