Return from Microsoft Nokia: who is Juha Alakarhu also? -Win10 Mobile, Nokia OZO, Imaging-IT information
Over the years, Microsoft's mobile business performance, twice we have seen Microsoft organization structure after the reorganization, Stephen Elop, Jo Harlow, originally belonging to the mobile phone sector executives have quit. In recent years, Microsoft has lost a mobile technical experts in the field of imaging department head Juha Alakarhu--Lumia. Now, he has returned to Nokia , as the panoramic camera head of Ozo.
Mobile phone camera experts in the field of
Juha Alakarhu joined Nokia in 2004 , served as senior and expert levels, and his main task is to develop an image sensor technology, improving the quality of camera phone. Juha Alakarhu SNR10 sensor performance standards were developed during this period, and later developed into industry standards.
Since October 2007, Juha Alakarhu was promoted to senior technical manager, responsible for cell phone cameras hardware technology. During which Nokia developed a big sensor, auto focus brakes as well as IRIS for mobile phones for the first time . Do not know whether members can still remember the Nokia N8, Nokia N86 n-series smartphones, their cameras using these technologies.
In 2011, Juha Alakarhu became head of Nokia's Imaging Division, until Microsoft acquired Nokia 2014 . Nokia has released in 2012 PureView 808 carry 41 million pixel camera phone, caused many users to exclaim "playing God".
PureView 808, Nokia uses a sampling technique called oversampling: in and out of the image at the same time, and make full use of the sensor has collected a large number of pixels, help users take better photos 5 million pixels. This technique is also led by Juha Alakarhu from the research and development team.
In 2013, Juha Alakarhu d team PureView technology uses Windows phone mobile, launched the 41 million-pixel camera Lumia 1020. In addition, Nokia also introduced the Lumia 920, allowing users to take a good photo in a low light environment .
Join Microsoft and return to Nokia
Microsoft's acquisition of Nokia mobile phones Division upon completion of the transaction, Juha Alakarhu joined Microsoft, as Lumia imaging team leader. During this period, while Microsoft mobile phones businesses gradually was unsatisfactory, but under the call of the outside world, Microsoft is bringing Lumia and Lumia 950 950 XL two flagship. Microsoft remains in these two flagship camera in the introduction of new technologies, to help users take better photos.
Lumia Lumia 950 and 950 on the XL, Juha Alakarhu and his team are committed to the mobile phone software and hardware combination.
These advanced cell phone equipped with a BSI sensor, three natural LED Flash as well as fifth-generation optical image stabilization technology, and improving the software for the camera pixels, color and exposure algorithm. Super high sensitivity with sensor, fifth-generation optical image stabilization technology and a large aperture, can bring better Dim light Imaging.
Regrettable is thatLumia and Lumia 950 950 cameras used by XL technologies, or Lumia image team's "Swan Song". Flagging Microsoft Smartphone, and a number of layoffs in the mobile phone sector. Reportedly, Juha Alakarhu after leaving Microsoft, Lumia imaging team faced was the fate of the dissolved.
▲图片说明： Juha Alakarhu Lumia830
Juha Alakarhu left Microsoft back into Nokia, responsible for Ozo panoramic camera team. Nokia Ozo for virtual reality, virtual reality contents of filming, production, transmission, and so on. After return to Nokia, Juha Alakarhu photography will continue to research and innovation, may be able to bring us a new virtual reality photography and imaging technology, allows more users to experience the charm of virtual reality.
Don't forget, Microsoft may also prepare anecdotal Surface Phone. Juha Alakarhu left the team disbanded and Lumia image will affect Surface Camera-Phone research and development work, we don't know. Anyway, losing Juha Alakarhu is a big loss for Microsoft. Nokia Ozo team, Juha Alakarhu re-joining is a good harvest.
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微软重返诺基亚：Juha Alakarhu是何许人也？ - Win10 Mobile,诺基亚OZO,影像 - IT资讯
一直以来，微软的手机业务表现不佳，我们也看到微软进行两次组织结构重组后，Stephen Elop、Jo Harlow等原本属于手机部门的高管都相继离职了。就在不久前，微软又失去了一名手机领域的技术专家——Lumia影像部门主管Juha Alakarhu。目前，他已经重返诺基亚，担任全景相机Ozo团队主管。
手机摄像领域的专家
Juha Alakarhu于2004年加盟诺基亚，担任高级专家一职，他的主要任务是研发图像传感器技术，改进手机拍照质量。Juha Alakarhu在此期间开发了SNR10传感器性能标准，并在后来发展为行业标准。
从2007年10月开始，Juha Alakarhu升任高级技术经理，负责手机摄像头硬件技术。在此期间诺基亚研发了大传感器、自动对焦制动器以及第一次用于手机的可变光阑等。不知道大家是否还记得当年的诺基亚N8、诺基亚N86等N系列智能手机，它们的摄像头都用到了这些技术。
2011年，Juha Alakarhu成为诺基亚成像技术部门主管，直到诺基亚2014年被微软收购。诺基亚在2012年发布了搭载4100万像素摄像头的PureView 808手机，令不少用户惊呼“逆天”。
在PureView 808上，诺基亚采用了名为oversampling的采样技术：在缩小图片的同时，又充分利用大传感器所采集到的大量像素点，帮助用户拍摄出效果更佳的500万像素照片。这个技术同样也出自Juha Alakarhu所领导的研发团队。
在2013年，Juha Alakarhu带领研发团队将PureView技术用到了Windows phone手机，推出了4100万像素摄像头的Lumia 1020。此外，诺基亚还推出Lumia 920，让用户可以在暗光环境拍摄出色的照片。
加入微软，重返诺基亚
在微软并购诺基亚手机部门交易完成后，Juha Alakarhu也加入了微软，担任Lumia影像团队主管。在这期间，虽然微软手机业务渐渐表现得不尽人意，但是在外界的呼唤之下，微软还是带来了Lumia 950和Lumia 950 XL两款旗舰。微软依然在这两款旗舰的摄像头中引入了一些新技术，希望帮助用户拍出更美观的照片。
在Lumia 950和Lumia 950 XL上，Juha Alakarhu和他的团队致力于实现手机软件和硬件紧密结合。
这两款手机搭载了先进的BSI传感器，三颗LED自然闪光灯以及第五代光学防抖技术，并改善了拍照软件的像素、色彩与曝光算法。凭借超级高灵敏度传感器、第五代光学防抖技术以及大光圈，能带来更出色的暗弱光成像。
令人遗憾的是，Lumia 950和Lumia 950 XL所采用的摄像头技术，或将是Lumia影像团队的“最后作品”。微软在智能手机领域表现萎靡，并对手机部门进行了多次裁员。有消息称，Juha Alakarhu离开微软后，Lumia影像团队也面临着被解散的命运。
▲图片说明：Juha Alakarhu介绍Lumia830
Juha Alakarhu离开微软后重回诺基亚公司，负责全景相机Ozo团队。诺基亚Ozo面向虚拟现实领域，可实现虚拟现实内容的拍摄、制作、传输等工作。在重回诺基亚后，Juha Alakarhu将继续研究和创新摄像技术，或许能为我们带来新的虚拟现实内容拍摄和成像技术，让更多用户体验虚拟现实的魅力。
别忘了，微软可能还在准备传闻中的Surface Phone。Juha Alakarhu的离开以及Lumia影像团队的解散是否会影响到Surface Phone摄像头的研发工作，我们还不得而知。不管怎么说，失去Juha Alakarhu对微软来说是一个不小的损失。而对诺基亚Ozo团队来说，Juha Alakarhu的重新加盟是个不错的收获。
