Download the app
educalingo
acutance

Meaning of "acutance" in the English dictionary

DICTIONARY

PRONUNCIATION OF ACUTANCE

əˈkjuːtəns


GRAMMATICAL CATEGORY OF ACUTANCE

noun
adjective
verb
adverb
pronoun
preposition
conjunction
determiner
exclamation
Acutance is a noun.
A noun is a type of word the meaning of which determines reality. Nouns provide the names for all things: people, objects, sensations, feelings, etc.

WHAT DOES ACUTANCE MEAN IN ENGLISH?

Acutance

In photography, the term "acutance" describes a subjective perception of sharpness that is related to the edge contrast of an image. Acutance is related to the amplitude of the derivative of brightness with respect to space. Due to the nature of the human visual system, an image with higher acutance appears sharper even though an increase in acutance does not increase real resolution. Historically, acutance was enhanced chemically during development of a negative, or by optical means in printing. In digital photography, onboard camera software and image postprocessing tools such as Photoshop or the GIMP offer various sharpening facilities, the most widely used of which is known as "unsharp mask" because the algorithm is derived from the eponymous analog processing method. In the example image, two light gray lines were drawn on a gray background. As the transition is instantaneous, the line is as sharp as can be represented at this resolution. Acutance in the left line was artificially increased by adding a 1 pixel wide darker border on the outside of the line and a 1 pixel wide brighter border on the inside of the line.

Definition of acutance in the English dictionary

The definition of acutance in the dictionary is a physical rather than subjective measure of the sharpness of a photographic image.

WORDS THAT RHYME WITH ACUTANCE

acceptance · advertence · assistance · comportance · distance · existence · importance · inadvertence · instance · misadvertence · portance · resistance · self-importance · sentence · sortance · sportance · substance · supportance · transportance · unimportance

WORDS THAT BEGIN LIKE ACUTANCE

acuminous · acupoint · acupressure · acupressure point · acupunctural · acupuncture · acupuncture needle · acupuncturist · acushla · acute · acute accent · acute angle · acute arch · acute conjunctivitis · acute dose · acute respiratory distress syndrome · acute triangle · acute-angled · acutely · acuteness

WORDS THAT END LIKE ACUTANCE

acquaintance · admittance · advance · amount of substance · antimicrobial resistance · capacitance · circumstance · conductance · Constance · court of first instance · for instance · inductance · inheritance · long-distance · reluctance · remittance · repentance · stance · the distance · the Resistance · walking distance

Synonyms and antonyms of acutance in the English dictionary of synonyms

SYNONYMS

Translation of «acutance» into 25 languages

TRANSLATOR

TRANSLATION OF ACUTANCE

Find out the translation of acutance to 25 languages with our English multilingual translator.

The translations of acutance from English to other languages presented in this section have been obtained through automatic statistical translation; where the essential translation unit is the word «acutance» in English.
zh

Translator English - Chinese

锐度
1,325 millions of speakers
es

Translator English - Spanish

acutancia
570 millions of speakers
en

English

acutance
510 millions of speakers
hi

Translator English - Hindi

acutance
380 millions of speakers
ar

Translator English - Arabic

acutance
280 millions of speakers
ru

Translator English - Russian

чёткость
278 millions of speakers
pt

Translator English - Portuguese

acutance
270 millions of speakers
bn

Translator English - Bengali

acutance
260 millions of speakers
fr

Translator English - French

acutance
220 millions of speakers
ms

Translator English - Malay

Acutance
190 millions of speakers
de

Translator English - German

Konturenschärfe
180 millions of speakers
ja

Translator English - Japanese

尖鋭度
130 millions of speakers
ko

Translator English - Korean

acutance
85 millions of speakers
jv

Translator English - Javanese

Acutansi
85 millions of speakers
vi

Translator English - Vietnamese

acutance
80 millions of speakers
ta

Translator English - Tamil

acutance
75 millions of speakers
mr

Translator English - Marathi

अचूकता
75 millions of speakers
tr

Translator English - Turkish

Acutance
70 millions of speakers
it

Translator English - Italian

acutance
65 millions of speakers
pl

Translator English - Polish

acutance
50 millions of speakers
uk

Translator English - Ukrainian

чіткість
40 millions of speakers
ro

Translator English - Romanian

acutance
30 millions of speakers
el

Translator English - Greek

acutance
15 millions of speakers
af

Translator English - Afrikaans

acutance
14 millions of speakers
sv

Translator English - Swedish

konturskärpan
10 millions of speakers
no

Translator English - Norwegian

acutance
5 millions of speakers

Trends of use of acutance

TRENDS

TENDENCIES OF USE OF THE TERM «ACUTANCE»

Principal search tendencies and common uses of acutance
List of principal searches undertaken by users to access our English online dictionary and most widely used expressions with the word «acutance».

Examples of use in the English literature, quotes and news about acutance

EXAMPLES

10 ENGLISH BOOKS RELATING TO «ACUTANCE»

Discover the use of acutance in the following bibliographical selection. Books relating to acutance and brief extracts from same to provide context of its use in English literature.
1
Way Beyond Monochrome 2e: Advanced Techniques for ...
Fig.13 explores different degrees of acutance and illustrates how perceived sharpness increases with edge contrast. Shown are four increasingly sharperappearing lines, and below each is a density trace across the respective line.
Ralph Lambrecht, Chris Woodhouse, 2013
2
Biomedical Image Analysis
In the search for a single measure that could represent the combined eects of various imaging and display processes, several researchers proposed various measures under the general label of \acutance" 114, 115, 142, 143, 144, 145, 146].
Rangaraj M. Rangayyan, 2004
3
The Visual Dictionary of Photography
A Acutance 19 Acutance is best described as how well the photographic medium handles edge contrast. High acutance gives crisp, clean edges with high edge contrast so they stand out clearly. Low acutance gives fuzzy edges that are less ...
David Prakel, 2009
4
David Busch's Quick Snap Guide to Using Digital SLR Lenses
Sharpness is usually measured using components called resolution and acutance, and a sharp image must have both qualities, carefully balanced. A given photograph can be high in resolution, but low in acutance, or have high acutance but ...
David D. Busch, 2008
5
Photographic Possibilities: The Expressive Use of Equipment, ...
Acutance describes the ability of film to record the edges of objects. The standard test measures film's ability to form a sharply defined image of a knife edge when exposed to a point light source. The nature of the grain and how it is distributed ...
Robert Hirsch, 2008
6
Photographic Possibilities: The Expressive Use of Equipment, ...
Acutance describes the ability of film to record the edges of objects. The standard test measures film's ability to form a sharply defined image of a knife edge when exposed to a point light source. The nature of the grain and how it is distributed ...
Robert Hirsch, 2009
7
The Manual of Photography and Digital Imaging
D ensit y 0.1 density increment Distance Figure 13.10 Microdensitometer traces of edge images for a medium-speed film developed in: (a) an 'acutance developer', giving edge effects; (b) a standard general-purpose developer, without edge ...
Elizabeth Allen, Sophie Triantaphillidou, 2012
8
The Manual of Photography
D ensit y 0.1 density increment Distance Figure 13.10 Microdensitometer traces of edge images for a medium-speed film developed in: (a) an 'acutance developer', giving edge effects; (b) a standard general-purpose developer, without edge ...
Elizabeth Allen, Sophie Triantaphillidou, 2011
9
The Workbook of Darkroom Techniques
Grain is increased slightly. • Make pictures look sharp by using a high acutance developer. High acutance developers create an illusion of sharpness by emphasizing any edges that appear in the picture. Where a dark area meets a light area, ...
John Hedgecoe, 1997
10
The Reproduction of Colour
One such measure is system modulation transfer acutance, or SMT acutance ( Crane, 1964). In making such assessments, allowance has to be made for the fact that the human eye, as shown in Fig. 18.16, has a maximum response at about 3 ...
R. W. G. Hunt, 2005

10 NEWS ITEMS WHICH INCLUDE THE TERM «ACUTANCE»

Find out what the national and international press are talking about and how the term acutance is used in the context of the following news items.
1
Orange County, CA; C3 Lighting's medical LED lighting system for …
... provide asymmetric lighting with five different color temperatures of illumination to increase visual acutance for the technician and physician. «LEDs Magazine, Jun 15»
2
Amateur Photographer of the Year: Life in Black and White – the art …
They too have a point – the acutance and grain structure of film is not available in digital where the image is inherently softer and needs a ... «Irish Times, May 15»
3
8 awesome paid iPhone apps on sale for free today
With Camly you can edit brightness, contrast, optical exposure, light and shadows, hue, colour temperature(warmth), saturation, acutance. «BGR, May 15»
4
7 awesome paid iPhone apps that are free for a limited time (save …
With Camly you can edit brightness, contrast, optical exposure, light and shadows, hue, colour temperature(warmth), saturation, acutance. «BGR, Apr 15»
5
Sony Zeiss Sonnar T* FE 55mm f1.8 ZA Lens Packs Outstanding …
Astigmatism is very well corrected thanks to Zeiss' anti-reflective coating, keeping horizontal and vertical acutance around constant values. «Softpedia, Jan 14»
6
SMC Pentax-DA 50mm f/1.8 Lens
Even though we found sharpness across the frame at wide apertures a little low, the acutance and resolution in the centre of the frame at ... «PhotoReview.com.au, Dec 13»
7
Metabones Works Some More Magic With Its New Speedboosters …
But in general, acutance and resolution are at least as good with the adapter as without it and vignetting is improved. When I received MTF data ... «PetaPixel, Dec 13»
8
There is No Such Thing as a Perfect Lens
Or that copy may have better acutance or less flare. In general the difference in copies that looks so impressive when charted numerically in a ... «PetaPixel, Sep 13»
9
Lumix GX7: The Very Best of Panasonic in One DSLM
This boosts the photosites' saturation limit, the sensitivity and the acutance all by about 10%. The signal-to-noise ratio should improve by 25%. «DigitalVersus, Jul 13»
10
Review: Leica M Monochrom is Not Quite a Black and White Decision
Push it to ISO 1600 or 3200, and the digital grain does resemble Kodak Tri-X processed with a high acutance developer. Beyond ISO 6400, the ... «PetaPixel, Jul 13»
REFERENCE
« EDUCALINGO. Acutance [online]. Available <https://educalingo.com/en/dic-en/acutance>. May 2024 ».
Download the educalingo app
EN