What's the difference between parallax and triangulation?

Parallax


Definition:

  • (n.) The apparent displacement, or difference of position, of an object, as seen from two different stations, or points of view.
  • (n.) The apparent difference in position of a body (as the sun, or a star) as seen from some point on the earth's surface, and as seen from some other conventional point, as the earth's center or the sun.

Example Sentences:

  • (1) We present a paradigm to estimate local affine motion parallax structure from a varying image irradiance pattern.
  • (2) There is evidence that OKNe is also sensitive to relative depth cues such as motion parallax, which we suggest helps the system to segregate the object of regard from other elements in the scene.
  • (3) The 3D spine images were extremely true to life and could be rotated around all three principle axes (constituting a movie), so that an illusion of head-motion parallax was created.
  • (4) In the second experiment it was shown that stroboscopic illumination disrupted accurate jumping but animals could jump accurately to a platform when only the leading edge was visible, showing that they depend on motion cues but not motion parallax.
  • (5) Furthermore, there was good agreement when parallax analysis was applied both to quenching by brominated and spin-labeled molecules, suggesting that the analysis is valid in both cases.
  • (6) A monocularly viewed surface specified by parallax alone was seen as a rigid, corrugated surface translating along a fronto-parallel path.
  • (7) In each experiment three conditions were compared: an active condition in which the coupling of parallax shifts and observer's head movements operated, a passive condition in which it did not, and a real-life set-up to measure the maximum reliability in depth estimation.
  • (8) These findings indicate large visual illusions in the nighttime situation and suggest that the ineffectiveness of relative motion parallax may be an important part of night approach problems.
  • (9) This indicates that the depth reported by parallax analysis is accurate and that the spin labels residue very close to their predicted locations in the membrane.
  • (10) Various gait parameters were measured from high-speed film, and after parallax correction, compared with the theoretical predictions.
  • (11) To correct for parallax error, radiopaque markers are positioned between the patient and the x-ray source.
  • (12) The method involves determination of the parallax in the apparent location of fluorophores detected when quenching by phospholipids spin-labeled at two different depths is compared.
  • (13) Because of parallax, the relationship between the ilioischial line and the teardrop changes for views varying as little as 10 degrees in horizontal obliquity from the true AP roentgenogram.
  • (14) We previously introduced the "parallax" method, which uses fluorescence quenching by spin-labeled lipids in order to measure the depth of molecules within a membrane [Chattopadhyay, A., & London, E. (1987) Biochemistry 26, 39-45].
  • (15) To establish the extent to which a parallax-effect of differing angles of X-ray beam relative to the patient can influence the radiologic assessment of carinal level, we measured the tracheal-vertebral distance at the carina in 29 lateral radiographs of neonates, infants and children, prepared diagrams of the loci of carinal beam intercept of the vertebral column for different angles of beam to body, from tracings of lateral radiographs of two 2-week-old infants, one with trachea of normal length and one with short trachea; of a nine-year-old child with short trachea, and of a ten-year-old with normal trachea, and made radiographs of a postmortem tracheobronchogram of a two-day-old infant at different beam angles.
  • (16) This prediction was confirmed by the experimental determination of chromatic parallax for two commercially available achromatizing lenses.
  • (17) The hypothesis was tested that the coupling of parallax shifts between objects depicted on a monitor screen around a fixation point with the head movements of an observer viewing this screen monocularly around a point coinciding with the fixation point is sufficient to create a convincing depth impression and to enable the observer to make reliable estimations of depth.
  • (18) Traditionally, parallax disparities refer to points that are well defined within the objects, such as edges or boundaries.
  • (19) Additional experiments indicated that the deficit in performance by MS cats was not reduced either by the administration of amphetamine or by increases in cues for motion parallax.
  • (20) The next step was to demonstrate that parallax is also significant as a way of segmenting the visual scene into separate objects.

Triangulation


Definition:

  • (n.) The series or network of triangles into which the face of a country, or any portion of it, is divided in a trigonometrical survey; the operation of measuring the elements necessary to determine the triangles into which the country to be surveyed is supposed to be divided, and thus to fix the positions and distances of the several points connected by them.

Example Sentences:

  • (1) Diagnostic pitfalls can generally be avoided by insisting on the opportunity for clinical-radiologic-pathologic correlation ("triangulation") before a final diagnosis is made.
  • (2) The psychological-interpersonal movement into triangulated oedipal object relations is mediated by the elaboration of mature forms of primal scene fantasies in conjunction with the development of a "transitional oedipal relationship" to the mother.
  • (3) The ultimate triangulation is that the Tories will represent the interests of both the bosses and the workers.
  • (4) Two horses with osteochondrosis lesions of the shoulder were examined arthroscopically and debrided with instrument triangulation.
  • (5) Improved treatment of spinal deformities in the elderly and osteoporotic population is dependent on improving the fixation at the metal-bone interface of spinal implants Particularly in osteoporotic vertebrae, the strength of fixation of two triangulated pedicle screws is better than either laminar hooks or single pedicle screws.
  • (6) The acceptance of the ambivalence and triangulation have the effect that the creative aspects in the later wish for a child are more powerful than the narcissistic or depressive parts.
  • (7) The cytotoxicities of the modified alkaloids in the in vitro P-388 system were not significantly increased over the unmodified alkaloids, suggesting that the triangulation hypothesis does not apply in this series at least.
  • (8) Trimming, triangulating, sneaking small policy advantages and wallowing in the narcissism of small differences, the parties seemed locked in a distant and disreputable Westminster charade.
  • (9) The evaluation phase incorporated the multi-method approach of triangulation to gather data during the implementation phase of the mentored placement.
  • (10) We developed some instruments to resolve these problems; i.e., scopes with a large diameter for high resolution, a triangulation instrument for multiple cannulations, a needle set-up jig for disk traction suture, a step cannulation system and a two-channel cannula for operating in the narrow lower joint space and a fixing jig for cannulas in the upper and lower joint space to observe the same portion of the discal tissue from both joint space during disk suturing.
  • (11) Foreign bodies near the posterior ocular wall were optimally evaluated by both radiographic and ultrasonic localization methods to avoid the inherent error of the x-ray triangulation system.
  • (12) They may instead use a scheme more overtly akin to triangulation, with each tectum providing an output signal encoding the angular position of the prey with respect to the contralateral eye and with distance extracted from the difference between these tectal outputs.
  • (13) Additionally, specific aspects of the research process are described, including triangulation of data-gathering strategies, sampling, and analysis.
  • (14) The gantry tilt technique provides direct visualization of the pathway of the needle tract; direct visualization is not possible with previously described techniques such as stereotactic biopsy or the triangulation technique.
  • (15) A simple interrupted suture pattern that excluded the mucosa and was oversewn with an inverting suture was compared with a triangulated double-row pattern of stainless steel staples.
  • (16) 10.41pm BST 82 min: Uruguay attempt a little triangulation on the edge of the Colombia box.
  • (17) This study explored the meaning of hope and identified strategies that are used to foster hope in a convenience sample of 30 terminally-ill adults using the technique of methodological triangulation (interview, Herth Hope Index and Background Data Form).
  • (18) From the data reported, it may be concluded that the enzyme structure can be described as an icosahedral capsid of 60 beta-subunits with the triangulation number T = 1.
  • (19) To cross-check, a team will also be deployed to measure the mountain the old-fashioned way: by triangulation, the same method used by the Welsh surveyor Sir George Everest, an earlier boss of India’s surveying agency, to determine the peak’s height in the 1850s.
  • (20) The known structures of polyoma and the plant viruses with triangulation number equal to 3 are evaluated in terms of hexamer-pentamer packing, and evidence is presented for the existence of larger subunits than the polypeptide in both cases.