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Bayer Effects

I took this panoramic photo of my house at night one weekend. I'm always disappointed at the level of quality produced by my camera at night-time. Zooming in to the darkest part of the sky produces this image:



It kind of reminded me of the Bayer pattern, used in the pixel layout of most digital cameras. The idea is that it's cheaper to produce a camera that doesn't need 3 detectors per pixel (one for red, green and blue). Instead, one sensor is used per pixel in the following pattern:


So the top left pixel only measures the amount of green falling on it. The red and blue values are computed by interpolating between the neighbouring pixels that did measure red/blue.

I wonder if the effect seen in the dark areas of the image is a direct result of the structure of the imaging elements of the camera. It could be worth investing in a 3-CCD camera, one that uses 3 sensors per pixel, as it might reduce these artifacts. It would be most relevant when the images were to be printed out full-size.

Ár dTeach

An Seomra Bia (The Dining Room)



An Ghrianán (The Conservatory)

St. Patrick's Day 2007

Some parade preparations on Western Way.



The parade's tail...


Meanwhile, I went to Aikido and missed the parade!



Afterwards, O'Connell Street was quickly cleared of the main barriers...



...but the rubbish remained....Filthy Dubliners!!!

St. Patrick's day in the Phibsboro dojo

St. Patrick's day in the Phibsboro dojo.

We all expected Cyril to wear a big green hat, but since we were competing with France for the 6-nations Championship later that day, he didn't want to show his true colours.

Dublin stroll

Findlater's Church, Parnell Square, Dublin
More information on this landmark

The river Liffey in Dublin, looking towards O'Connell Bridge.
The building on the right is Liberty Hall, currently the tallest building in Dublin.

Aikido - Dan Grading Preparations

Video Panoramas

By splitting a video into frames (using TMPGEnc) and then stitching them together in a panoramic fashion (using Autostitch) wide-angle images can be created, giving a greater sense of the scene and also of the movement in the video. Both software applications are freely available.

This is from Lisa's photoshoot at the Twelve Apostles on the Great Ocean Road in Australia

Lexington, Kentucky, USA.

Our New Year's Party in Blessington Street

Garden Flowers

Textures

What is texture?

The property of a material's individual crystallites having nonrandom orientation...The tactile quality of a surface or the representation or invention of the appearance of such a surface quality...In a photographic image the frequency of change and arrangement of tones...Both the tactile surface of an artwork itself and the visual illusion of tactile surfaces within an artwork...The visual and tactile quality of the surface of an object, revealed in a photograph by variances in tone, depth and shape...A perceptible pattern or structure, even if random in nature...An element of art which refers to how a surface feels or looks like it would feel.

Panoramic Stitching

drat ... it's tiny!
Blogger wont let me upload the 3.5MB version of this image.
It's a panoramic wrap-around view of my apartment.
The really great thing is, in the full version, you can actually zoom in and read the DVD titles - it's that detailed!

Depth of Field

I've been trying to convince my camera to create shots with nice "depth of field" perception. I'd like it to blur the background and thereby emphasise the object in focus. The super-closeup-macro seems to work well, but it needs the object to be very close and the camera to be steady.