About ZenteK

ZenteK Web design encompasses many different skills and disciplines in the production and maintenance of websites. The different areas of web design include web graphic design; interface design; authoring, including standardised code and proprietary software; user experience design; and search engine optimization. Often many individuals will work in teams covering different aspects of the design process, Here ZenteK will cover them all.

The term web design is normally used to describe the design process relating to the front-end (client side) design of a website including writing mark up. Web design partially overlaps web engineering in the broader scope of web development. Web designers are expected to have an awareness of usability and if their role involves creating mark up then they are also expected to be up to date with web accessibility guidelines.

Depending on client requirements all new designs will be smart phone and ipad compatible

There may be something that your looking for , ZenteK hopes that you find it here if not then please enjoy your visit.


ZenteK Photography

Purpose and methods. Tone Mapping

As an amateur Photographer i like to pay special attention to Tone mapped images as this technique adds justĀ  a little bit of something different to a photograph, its not to everyone’s taste but liked by many.

DSC_9075_tonemappedThe goals of tone mapping can be differently stated depending on the particular application. In some cases producing just aesthetically pleasing images is the main goal, while other applications might emphasize reproducing as many image details as possible, or maximizing the image contrast. The goal in realistic rendering applications might be to obtain a perceptual match between a real scene and a displayed image even though the display device is not able to reproduce the full range of luminance values.



Various tone mapping operators have been developed in the recent years.[5] They all can be divided in two main types:


St Johns Seaham Harbour This Photograph was taken in daylight at 12 noon

global (or spatially uniform) operators: they are non-linear functions based on the luminance and other global variables of the image. Once the optimal function has been estimated according to the particular image, every pixel in the image is mapped in the same way, independent of the value of surrounding pixels in the image. Those techniques are simple and fast[1] (since they can be implemented using look-up tables), but they can cause a loss of contrast. Examples of common global tone mapping methods are contrast reduction and color inversion.

local (or spatially varying) operators: the parameters of the non-linear function change in each pixel, according to features extracted from the surrounding parameters. In other words, the effect of the algorithm changes in each pixel according to the local features of the image. Those algorithms are more complicated than the global ones; they can show artifacts (e.g. halo effect and ringing); and the output can look unrealistic, but they can (if used correctly) provide the best performance, since human vision is mainly sensitive to local contrast.

All work on this site has been Designed and published by Keith Duffy