Signification de "defocus" dans le dictionnaire anglais

PRONONCIATION DE DEFOCUS EN ANGLAIS

defocus  [diːˈfəʊkəs]

CATÉGORIE GRAMMATICALE DE DEFOCUS

Defocus est un verbe.

Le verbe, c'est la partie de la proposition que l'on conjugue et qui décrit l'action et l'état.

Voir la conjugaison du verbe cantar en anglais.

QUE SIGNIFIE DEFOCUS EN ANGLAIS

Abercrombie faché

Defocus aberration

En optique, le défocalisation est l'aberration dans laquelle une image est simplement hors de portée. Cette aberration est familière à tous ceux qui ont utilisé une caméra, une caméra vidéo, un microscope, un télescope ou une jumelle. Optiquement, le défocalisation fait référence à une translation le long de l'axe optique à l'écart du plan ou de la surface de la meilleure mise au point. En général, le défocalisation réduit la netteté et le contraste de l'image. Ce qui devrait être pointu, les bords à contraste élevé dans une scène deviennent des transitions progressives. Un détail précis dans la scène est flou ou même devient invisible. Presque tous les appareils optiques formant des images intègrent une certaine forme de réglage de la mise au point afin de minimiser les défauts et de maximiser la qualité de l'image. Le degré de flou d'image pour une quantité donnée de changement de focus dépend inversement du nombre de lentille f. Les faibles nombres f, tels que f / 1,4 à f / 2,8, sont très sensibles au défocalisation et ont des profondeurs de concentration très peu profondes. Les nombres f élevés, dans la gamme f / 16 à f / 32, sont très tolérants au défroi et, par conséquent, ont de grandes profondeurs de focalisation. Le cas limitant en f-number est la caméra sténopé, fonctionnant peut-être de f / 100 à f / 1000, auquel cas tous les objets sont focalisés presque indépendamment de leur distance de l'ouverture de sténopé.

In optics, defocus is the aberration in which an image is simply out of focus. This aberration is familiar to anyone who has used a camera, videocamera, microscope, telescope, or binoculars. Optically, defocus refers to a translation along the optical axis away from the plane or surface of best focus. In general, defocus reduces the sharpness and contrast of the image. What should be sharp, high-contrast edges in a scene become gradual transitions. Fine detail in the scene is blurred or even becomes invisible. Nearly all image-forming optical devices incorporate some form of focus adjustment to minimize defocus and maximize image quality. The degree of image blurring for a given amount of focus shift depends inversely on the lens f-number. Low f-numbers, such as f/1.4 to f/2.8, are very sensitive to defocus and have very shallow depths of focus. High f-numbers, in the f/16 to f/32 range, are highly tolerant of defocus, and consequently have large depths of focus. The limiting case in f-number is the pinhole camera, operating at perhaps f/100 to f/1000, in which case all objects are in focus almost regardless of their distance from the pinhole aperture.

définition de defocus dans le dictionnaire anglais

La définition de defocus dans le dictionnaire est hors de propos. Une autre définition de défocalisation est de faire flipper.

CONJUGAISON EN ANGLAIS DU VERBE DEFOCUS

PRESENT

Present

I defocus

you defocus

he/she/it defocuses

we defocus

you defocus

they defocus

Present continuous

I am defocusing

you are defocusing

he/she/it is defocusing

we are defocusing

you are defocusing

they are defocusing

Present perfect

I have defocused

you have defocused

he/she/it has defocused

we have defocused

you have defocused

they have defocused

Present perfect continuous

I have been defocusing

you have been defocusing

he/she/it has been defocusing

we have been defocusing

you have been defocusing

they have been defocusing

PAST

Past

I defocused

you defocused

he/she/it defocused

we defocused

you defocused

they defocused

Past continuous

I was defocusing

you were defocusing

he/she/it was defocusing

we were defocusing

you were defocusing

they were defocusing

Past perfect

I had defocused

you had defocused

he/she/it had defocused

we had defocused

you had defocused

they had defocused

Past perfect continuous

I had been defocusing

you had been defocusing

he/she/it had been defocusing

we had been defocusing

you had been defocusing

they had been defocusing

FUTURE

Future

I will defocus

you will defocus

he/she/it will defocus

we will defocus

you will defocus

they will defocus

Future continuous

I will be defocusing

you will be defocusing

he/she/it will be defocusing

we will be defocusing

you will be defocusing

they will be defocusing

Future perfect

I will have defocused

you will have defocused

he/she/it will have defocused

we will have defocused

you will have defocused

they will have defocused

Future perfect continuous

I will have been defocusing

you will have been defocusing

he/she/it will have been defocusing

we will have been defocusing

you will have been defocusing

they will have been defocusing

CONDITIONAL

Conditional

I would defocus

you would defocus

he/she/it would defocus

we would defocus

you would defocus

they would defocus

Conditional continuous

I would be defocusing

you would be defocusing

he/she/it would be defocusing

we would be defocusing

you would be defocusing

they would be defocusing

Conditional perfect

I would have defocus

you would have defocus

he/she/it would have defocus

we would have defocus

you would have defocus

they would have defocus

Conditional perfect continuous

I would have been defocusing

you would have been defocusing

he/she/it would have been defocusing

we would have been defocusing

you would have been defocusing

they would have been defocusing

IMPERATIVE

Imperative

you defocus
we let´s defocus
you defocus

NONFINITE VERB FORMS

Infinitive

to defocus

Past participle

defocused

Present Participle

defocusing

TRADUCTION DE DEFOCUS

Découvrez la traduction de defocus dans 25 langues grâce à notre traducteur anglais multilingue.

Dans cette section, les traductions de defocus dans d'autres langues ont été obtenues par traduction automatique statistique, où l'unité essentielle de la traduction est le mot «defocus» en anglais.

• Traducteur Français - chinois: 焦
• Traducteur Français - espagnol: desenfoque
• anglais: defocus
• Traducteur Français - hindi: defocus
• Traducteur Français - arabe: يزيل التباؤر
• Traducteur Français - russe: расфокусировки
• Traducteur Français - portugais: desfocagem
• Traducteur Français - bengali: defocus
• Traducteur Français - français: défocalisation
• Traducteur Français - malaisien: Defocus
• Traducteur Français - allemand: Unschärfe-
• Traducteur Français - japonais: ピンぼけ
• Traducteur Français - coréen: 디 포커스
• Traducteur Français - javanais: Defocus
• Traducteur Français - vietnamien: defocus
• Traducteur Français - tamoul: defocus
• Traducteur Français - marathi: डिफोकस
• Traducteur Français - turc: bulanıklaştırma
• Traducteur Français - italien: defocus
• Traducteur Français - polonais: nieostrości
• Traducteur Français - ukrainien: расфокусировки
• Traducteur Français - roumain: defocalizare
• Traducteur Français - grec: αποεστίασης
• Traducteur Français - afrikaans: Defocus
• Traducteur Français - suédois: defocus
• Traducteur Français - norvégien: defokus

10 LIVRES EN ANGLAIS EN RAPPORT AVEC «DEFOCUS»

Découvrez l'usage de defocus dans la sélection bibliographique suivante. Des livres en rapport avec defocus et de courts extraits de ceux-ci pour replacer dans son contexte son utilisation littéraire.

Depth From Defocus: A Real Aperture Imaging Approach: A Real ...

This book is about passive techniques for depth recovery, where the scene is illuminated only by natural light as opposed to active methods where a special lighting device is used for scene illumination.

A.N. Rajagopalan, 1999

3-D Shape Estimation and Image Restoration: Exploiting ...

This book presents a coherent framework for the analysis & design of algorithms to estimate 3-D shape from defocused & motion blurred images, & to eliminate defocus & motion blur to yield 'restored' images.

Paolo Favaro, Stefano Soatto, 2007

Progress in Optics

Balancing of defocus aberration with spherical aberration or astigmatism 6.1. Focused beam We have seen that the depth of focus is quite large when the Fresnel number is small. Hence, the axial irradiance at a certain distance z < R in the ...

Emil Wolf, 2006

The Eye and Visual Optical Instruments

10.0 Introduction 225 10.1 Types of defocus 227 10.2 Defocus calculations 230 10.3 Depth-of-field 235 10.4 Focussing techniques 238 Exercises and problems 242 Summary of main symbols 243 References and bibliography 243 10.0 ...

George Smith, 1997

Handbook of Image Quality: Characterization and Prediction

The y-axis is JNDs of quality and the x-axis is defocus in mm, with zero defocus corresponding to the best focus position. The simplest model of lens MTF as a function of defocus is the blur circle (geometrical optics) approximation, in which the ...

Brian Keelan, 2002

Optical Imaging and Aberrations: Ray geometrical optics

and sinB— + cos6 dW r 36 (3- 13b) For a radially symmetric aberration W(r), a ray of zone r in the exit pupil plane intersects the Gaussian image plane at a distance ri from the Gaussian image point given by 3.3 DEFOCUS ABERRATION We ...

Virendra N. Mahajan, 1998

Proceedings of the 26th Conference of Spacecraft TTamp;C ...

In practice, the parabolic reflectors of deep space antennas are influenced by many factors, such as fabrication error, gravity and thermal deformation, which induce the feed deviating from the focus of the paraboloid. The feed defocus would ...

Rongjun Shen, Weiping Qian, 2012

Adaptive Optics for Vision Science: Principles, Practices, ...

manually or to set a range and step size (in diopters) for calibrated and automated defocus adjustment. The defocus can be adjusted in open-loop mode or closed-loop mode. In open-loop mode, the appropriate voltages to change the focus of ...

Jason Porter, Hope Queener, Julianna Lin, 2006

Characterizing Effects and Benefits of Beam Defocus on High ...

This dissertation makes contributions towards knowledge of optimizing of laser weapon performance when operating in the air-to-ground (ATG) regime in thermal blooming conditions.

Scott N Long, 2012

Progress in Optics

Balancing 0f defocus aberration with spherical aberration or astigmatism 6.1. Focused beam We have seen that the depth of focus is quite large when the Fresnel number is small. Hence, the axial irradiance at a certain distance 2: < R in the ...

‎2006

10 ACTUALITÉS CONTENANT LE TERME «DEFOCUS»

Découvrez de quoi on parle dans les médias nationaux et internationaux et comment le terme defocus est employé dans le contexte des actualités suivantes.

How Microsoft Almost Won Digital Advertising

That defocus culminated finally in the exit we saw last week from everything but search and paid search. But there was a time when Microsoft ... «AdExchanger, juil 15»

Bongani Mbindwane

China has had a rough time getting lucrative assets in Europe, their defocus to Greece will also be potentially negative for South Africa as they ... «Daily Maverick, juil 15»

DNA Test: It's all about Mi … the Xiaomi Mi4i, that is

Swipe left, and you get access to a panorama mode, night mode, manual, beautify mode and a refocus mode that helps to artistically defocus ... «Digital News Asia, juil 15»

How CEOs can cope up with Digital disorientation

This also means that we have to defocus from some existing business areas. Digital organisations operate at a much higher clock speed and ... «Firstpost, juil 15»

7 Deadly Sins of Sales

And don't let envy of your competitors strengths defocus you from the task at hand. Develop sales strategies that deliver the value your ... «Pulse, juil 15»

DNA Test: HTC's One M9+ offers pluses aplenty

The defocus mode on the rear camera needs some distance to work – at least 30cm from a subject at the minimum – along with a suitable ... «Digital News Asia, juin 15»

Sigma's Newest Full-Frame Wide Zoom Lens Has A Constant F2 …

That low aperture value means you'll be able to achieve great background defocus effects (bokeh), and the lens also includes Sigma's quiet ... «TechCrunch, juin 15»

First Impressions Review of the New Panasonic Lumix G7

Auto Focus – Panasonic has improved the AF, including a technology called Depth From Defocus, which allows the G7 to calculate the ... «Resource Magazine, juin 15»

Dell Venue 8 7000 with Intel RealSense Camera Launched in India

Also you can refocus or defocus any section of the image afterwards. Further, this intelligent technology, can can also do area measurements ... «Gizbot, juin 15»

Kensington Launches SD4000 Universal USB Docking Station …

To move from one window to the next, or to pull up a completely new app or web browser, requires the user to defocus from the work at-hand. «MarketWatch, juin 15»