Nokia has exciting news for N900 users - Page 48 - maemo.org

Active Topics

The N900 is now 15 years old! (7)
to Nokia N900 by Danct12 - 1 day, 13 hrs ago
Sailfish OS for the Motorola Moto G7 Power (XT1955-5) - (ocean) (4)
to SailfishOS by Maemish - 2 days, 8 hrs ago
F(x)tec Pro1x (QWERTY) for sale (0)
to Buy & Sell by aln00000 - 4 days, 17 hrs ago
more...

Page 48 of 51

Thread Tools

	cjp	2010-07-26 , 16:12
	Posts: 762 \| Thanked: 395 times \| Joined on Jan 2010 @ Helsinki	#471

So the big surprise was a paint program for N900... :l

Okay :l

Quote & Reply |

	danramos	2010-07-26 , 16:16
	Posts: 4,672 \| Thanked: 5,455 times \| Joined on Jul 2008 @ Springfield, MA, USA	#472

Originally Posted by cjp

So the big surprise was a paint program for N900... :l

Okay :l

What? No, I thought it was the fcam app, drivers and api?

Quote & Reply |

pthomas22	2010-07-26 , 16:16
Posts: 141 \| Thanked: 51 times \| Joined on May 2010 @ Netherlands	#473

Originally Posted by cjp

So the big surprise was a paint program for N900... :l

Okay :l

No
It is probably best that you read the thread before making a comment

Quote & Reply |

	cjp	2010-07-26 , 16:18
	Posts: 762 \| Thanked: 395 times \| Joined on Jan 2010 @ Helsinki	#474

Haha I did and read the last couple of pages and wondered why the subject was suddenly on FCam

Sorry, my bad. But that link in the 1st post now leads to MyPaint demo videos

Quote & Reply |

HugoSon	2010-07-26 , 16:35
Posts: 221 \| Thanked: 51 times \| Joined on Nov 2009 @ Germany	#475

Originally Posted by danramos

JPEG doesn't "bake those in" any more than TIFF, DNG or RAW. Once you have the image and you begin to process the image, ALL the data is just as malleable and useful as anything RAW gives you. Hell, JPEG even borrows a page out of TIFF and records a lot of that in the EXIF metadata. RAW isn't a format. It's just a proprietary aperture dump. Putting it into a 100% quality JPEG with EXIF metadata would record most of the same information (ALL of the info, if you use the MakerNote tag in the EXIF metadata) with pretty decent quality and it would at least work everywhere. To that end, unless I'm still missing something, I don't see the utility of the RAW dump. Mind you, we're also still only talking about a 5MP cell phone camera, too.

...i.E. "white balance" is "baked" into the JPEG file - and there is no way to change it afterwards without losing quality once a certain white balance has been applied (“once the RAW dump has been converted into JPEG file format applying a certain white balance algorithm”). But I agree - there is no strict "RAW is better than JPEG". Shooting RAW normally gives you more control in order to maximize the image quality potential - even with a 5MP cell phone cam with a plastic lens - during post process without losing quality (and no camera does store the JPEG files with lossless "100%" quality). But this comes with a trade-off of speed, ease of use and storage place needed for the RAW files.

Quote & Reply |

The Following 2 Users Say Thank You to HugoSon For This Useful Post:
danramos, walter-se

	daperl	2010-07-26 , 17:41
	Posts: 2,427 \| Thanked: 2,986 times \| Joined on Dec 2007	#476

Someone help me with my math here. This is from

/usr/include/FCam/N900/Sensor.h

Code:

Recommended resolutions to use in UYVY mode include
* 640x480, 1280x960, 2560x1920, and 2576x1944 (which is not quite
* 4:3).

Code:

/** The minimum frame time on the N900 is the 33414 us for
* smaller resolutions (height <= 960), and 77412 us for larger
* resolutions. */
virtual int minFrameTime() const {return 33414;}

I take that to mean:

1 / 33414 us = 29.92 fps @ 1280x960

If my math is correct, and with some help from some really good code and maybe more help from the other processors, doesn't it seem that

25 fps @ 1280x720 is possible?

__________________
N9: Go white or go home

Quote & Reply |

j.s	2010-07-26 , 19:41
Posts: 486 \| Thanked: 251 times \| Joined on Oct 2009	#477

Originally Posted by danramos

As for my Android handset using Camera360, it can (and I have set it up to) write a 100% quality JPEG file for a near lossless JPEG file.

There is no standard for the meaning for JPEG % quality. Different software interprets the number differently. In no case does it mean the best quality possible.

The Independent JPEG Group, authors of the free and open source libjpeg, reccomend never using above 90% for images compressed by libjpeg.

__________________
The Mini-USB plug is an improvement over both the Type B plug and the Micro-B plug.

Quote & Reply |

The Following User Says Thank You to j.s For This Useful Post:
danramos

	inidrog	2010-07-26 , 19:47
	Posts: 266 \| Thanked: 89 times \| Joined on Jan 2010 @ Norway	#478

Hi I am a N900 user, what is the "exiting news" for me. Can anyone sum it up in a few words?

__________________
---

"Sex is not the answer. Sex is the question. Yes is the answer..."

Quote & Reply |

The Following 2 Users Say Thank You to inidrog For This Useful Post:
joshua.maverick, Lawand

Ayodeji	2010-07-26 , 20:52
Posts: 9 \| Thanked: 8 times \| Joined on Dec 2009	#479

Originally Posted by daperl

Someone help me with my math here. This is from

/usr/include/FCam/N900/Sensor.h
Code:
Recommended resolutions to use in UYVY mode include
* 640x480, 1280x960, 2560x1920, and 2576x1944 (which is not quite
* 4:3).
Code:
/** The minimum frame time on the N900 is the 33414 us for
* smaller resolutions (height <= 960), and 77412 us for larger
* resolutions. */
virtual int minFrameTime() const {return 33414;}
I take that to mean:

1 / 33414 us = 29.92 fps @ 1280x960

If my math is correct, and with some help from some really good code and maybe more help from the other processors, doesn't it seem that

25 fps @ 1280x720 is possible?

The camera hardware on the N900 is capable of generating frames at that rate. However, encoding video at that rate is the more challenging part.