perspective


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perspective

Decision-making The vantage for cost-effectiveness analysis, which affects the types of costs included in a study

perspective 

One of the cues to perception of the third dimension induced by a graphic representation on a plane, as in a drawing, or as a monocular cue, such as aerial perspective or linear perspective. (Fig. P8). See depth perception.
aerial perspective Perspective influenced by the state of clarity of the atmosphere. Far away objects appear less distinct and desaturated in colour due to the diffusion of light by the air in between the object and the eye. However, a very pure atmosphere may lead to underestimation of the distance of objects as they retain their distinctness and colour in this case. Aerial perspective is used by artists who soften and blur the colour and outlines of objects that they wish to appear as far away. See shadow.
geometrical perspective See linear perspective.
linear perspective Perspective conveyed by drawing images in different sizes. For example, parallel lines receding into the distance are made to converge. (Fig. P8) Syn. geometrical perspective.
Fig. P8 Examples of perspective drawingsenlarge picture
Fig. P8 Examples of perspective drawings
References in classic literature ?
In the particular case where the place concerned is a human brain, the perspective belonging to the place consists of all the perceptions of a certain man at a given time.
Given any appearance of an object, we can construct hypothetically a certain system of appearances to which the appearance in question would belong if the laws of perspective alone were concerned.
But, on the other hand, directly she thought of the future with Vronsky, there arose before her a perspective of brilliant happiness; with Levin the future seemed misty.
They paused for a moment on the steps of the portico, looking at the fresh perspective of the street in the autumn morning sun's bright rays, and then went down.
On a healthy autumn day; when the golden fields had been reaped and ploughed again, when the summer fruits had ripened and waned, when the green perspectives of hops had been laid low by the busy pickers, when the apples clustering in the orchards were russet, and the berries of the mountain ash were crimson among the yellowing foliage.
Apparently this consolatory perspective of a mother's prospects failed in producing its due effect.
The military bands struck up altogether; the horses stood upon two legs each, cantered backwards, and whisked their tails about in all directions; the dogs barked, the mob screamed, the troops recovered, and nothing was to be seen on either side, as far as the eye could reach, but a long perspective of red coats and white trousers, fixed and motionless.
Winkle had each performed a compulsory somerset with remarkable agility, when the first object that met the eyes of the latter as he sat on the ground, staunching with a yellow silk handkerchief the stream of life which issued from his nose, was his venerated leader at some distance off, running after his own hat, which was gambolling playfully away in perspective.
You bring Trent to me; assure him that I'm his friend though i fear he a little distrusts me (I don't know why, I have not deserved it); and you've both of you made your fortunes--in perspective.
Beneath the unclouded and mild azure sky, upon the fair face of the pleasant sea, wafted by the joyous breezes, that great mass of death floats on and on, till lost in infinite perspectives.
Notre-Dame-de-Paris" has, perhaps opened some true perspectives on the art of the Middle Ages, on that marvellous art which up to the present time has been unknown to some, and, what is worse, misknown by others.
Vast perspectives of success unroll themselves before my eyes.