Should /i Draw Pixel Correction Ratio On

dccdp • Regular Fellow member • Posts: 309

Pixel aspect ratio correction

Feb 4, 2010

Hello all,

I have a relatively new netbook which is great to deport, has decent screen and fairly good performance (for what it is). I can even do minor mail service processing for my photos, which is fine.

However, information technology has a problem, and I constitute out that many netbooks in its form are the same: its screen resolution is 1024x600, while the actual aspect ratio of the LCD panel is sixteen:ix. This is not so expert, equally 1024/ 600=1.706, while 16/9=i.778.

This means the image on the screen is slightly stretched horizontaly, to fit the 16:9 space. A quick search on google led me to the console manufacturer's site and, indeed, the dot pitch is 0.218x0.209, i.due east. the pixel is rectangular rather than foursquare.

This is annoying with photos, because although the difference is non that big, the horizontal stretching is noticeable specially with portraits.

My question: is there any prototype viewer/processor that allows for an aspect correction factor when showing images? For video I have institute a workaround, as the VLC player can exist configured with a "monitor attribute ratio" aspect.

I need this correction but for viewing the images on the screen, I don't want to actually modify the pictures (through scaling).

Any viewer software that could do this (like vlc does with movies) would be perfect for me. And i am open to whatsoever OS (I tin can apply either Windows or Linux on my netbook).

Thanks a lot,
Dan

Catechism PowerShot SX50 HS Sony Alpha NEX-3 Sony a6000 Sony E eighteen-55mm F3.five-5.6 OSS Sony E 55-210mm F4.five-half-dozen.3 OSS +3 more

yongbo • Veteran Member • Posts: iii,612

Re: Pixel aspect ratio correction

In reply to dccdp • Feb 4, 2010

dccdp wrote:

Hello all,

I have a relatively new netbook which is groovy to carry, has decent screen and adequately good performance (for what information technology is). I can even do pocket-sized post processing for my photos, which is fine.

However, it has a problem, and I found out that many netbooks in its class are the same: its screen resolution is 1024x600, while the bodily aspect ratio of the LCD panel is xvi:9. This is not so expert, as 1024/ 600=1.706, while 16/9=i.778.

Netbook is only for surfing, nobody will notice the slightly difference. Some of the photo editing software won't run on that resolution, such as Canon'due south Digital Photograph Professional person.

This means the image on the screen is slightly stretched horizontaly, to fit the 16:9 space. A quick search on google led me to the console manufacturer's site and, indeed, the dot pitch is 0.218x0.209, i.due east. the pixel is rectangular rather than square.

Non certain about this, there are gaps between the pixels. Yous can make a square image, like 580x580, use dominion to confirm if it'due south non displayed as a square.

This is annoying with photos, considering although the difference is not that large, the horizontal stretching is noticeable peculiarly with portraits.

My question: is in that location whatever paradigm viewer/processor that allows for an aspect correction factor when showing images? For video I have plant a workaround, equally the VLC actor tin be configured with a "monitor aspect ratio" attribute.

I need this correction only for viewing the images on the screen, I don't want to actually modify the pictures (through scaling).

Any viewer software that could practise this (like vlc does with movies) would be perfect for me. And i am open up to whatever OS (I tin can apply either Windows or Linux on my netbook).

Thank you a lot,
Dan

DaveBaker • Regular Fellow member • Posts: 275

Re: Pixel aspect ratio correction

In reply to dccdp • Feb 4, 2010

Hi,

Try GIMP, where you get this screen within the Preferences:

Dave

OP dccdp • Regular Member • Posts: 309

Re: Pixel aspect ratio correction

Cheers for the tip, Dave! I have installed Gimp and it works just fine. The first startup was boring, but afterwards it proved usable (for small stuff) on the netbook.

Withal, I would also need a dedicated viewer (i.e., fast, with browsing capabilities) with attribute ratio correction; does anyone know if such software exists?

Dan

Canon PowerShot SX50 HS Sony Blastoff NEX-iii Sony a6000 Sony E 18-55mm F3.5-v.6 OSS Sony Due east 55-210mm F4.v-half dozen.3 OSS +3 more

OP dccdp • Regular Member • Posts: 309

Re: Pixel attribute ratio correction

In respond to yongbo • Feb 5, 2010

yongbo wrote:

Netbook is but for surfing, nobody will observe the slightly difference. Some of the photograph editing software won't run on that resolution, such as Catechism's Digital Photo Professional.

They'll notice the difference when they meet themselves in the picture... well... wider than expected

ViewNX and even CaptureNX2 run just fine on that resolution, and for minor pp they are more than than enough. I've also followed Dave's suggestion, and installed Gimp. It works, too.

This means the image on the screen is slightly stretched horizontaly, to fit the xvi:9 space. A quick search on google led me to the panel manufacturer'south site and, indeed, the dot pitch is 0.218x0.209, i.e. the pixel is rectangular rather than square.

Not sure about this, there are gaps between the pixels. You can make a square image, similar 580x580, use rule to confirm if information technology'due south not displayed as a foursquare.

Looking with a magnifying glass at the pixels I tin can confirm that at that place are indeed larger gaps horizontally than vertically between them. Still, the image looks stretched, the fact is those pixels fill horizontally a wider area that they should. Confirmed this with a ruler, measuring the bodily screen dimensions: it actually is 16:9, while 1024x600 isn't.

As a side notation, many netbooks accept this outcome, I am a bit surprised few talk nearly this on the internet. On the other paw, some 1024x600 netbooks do have proper screens, with evenly spaced pixels. The aspect ratio is about 15.4:9.

Unfortunately, it is very hard to discover accurate info in the specifications, manufacturers and vendors usually specify only "WSVGA" or "wide screen", and when they say 16:9 or 16:10 you cannot exist certain they are not mistaken.

Dan

Canon PowerShot SX50 HS Sony Alpha NEX-3 Sony a6000 Sony Eastward 18-55mm F3.5-v.6 OSS Sony E 55-210mm F4.five-vi.3 OSS +iii more

DaveBaker • Regular Fellow member • Posts: 275

Re: Pixel aspect ratio correction

In answer to dccdp • Feb 5, 2010

Hi,

You could try IrfanView: http://www.irfanview.com/

There is a setting to adjust the display multiplier. It looks similar you lot can only enter whole numbers - so y'all may not be able to get a perfect adjustment for your screen.

Dave

OP dccdp • Regular Member • Posts: 309

Re: Pixel aspect ratio correction

Thank y'all once again! The setting in irfanview works, although information technology's a chip bad-mannered: it seems information technology is applied only when selecting "fit to screen" for images, and of form works merely in total screen (the normal viewer options practise non include this setting). Even so, it's definitely usable and information technology helps a lot when viewing images.

In the meanwhile I have too tried other image viewers (xnview, faststone, picasa, acdsee, absee, alsee), and while they are faster than irfanview, none seem to provide aspect ratio corection.

Dan

Canon PowerShot SX50 HS Sony Alpha NEX-3 Sony a6000 Sony E xviii-55mm F3.five-5.half-dozen OSS Sony East 55-210mm F4.five-6.3 OSS +iii more