100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Previously searched by you
Previously searched by you
logo
Vision and Sport- incredibly interesting and a lot of additional reading and analysis provided here £6.49
Add to cart
Quickly navigate to
Preview
  2.  
  3. Cardiff University (CF)
  4.  
  5. Psychology
  6.  
  7. Active Vision

Lecture notes

Vision and Sport- incredibly interesting and a lot of additional reading and analysis provided here
 0 purchase

This lecture is very interesting especially for a football fan! It explores why there is such a great difficulty in detecting whether a player is offside or not, due to an error in our vision (flag error or no flag error). It explores motion extrapolation, apparent ball size, and why goalkeepers ...

[Show more]

Preview 1 out of 4  pages

Document information

  • April 13, 2018
  • 4
  • 2016/2017
  • Lecture notes
  • Dr simon rushton
  • 9

Subjects

Written for

All documents for this subject (8)

Seller

avatar-seller
emroselewis

Content preview

Lecture 9: Sport

The Referee:
The problem of making an offside judgement is very important in football.
Offside: striker cannot stand in between the opposing teams goal and defenders
whilst the ball is in play.

Oudejans et al (2000): argue that what matters is that when people make
judgements about offside, that they don’t make judgements of where people are
in the world, but where they are in relative position in the retinal image.
So there is an influence of position of assistant referee.
Ideas:
Flag error: if attacker is behind the defender so not between the goal and
defender, but the referee has to make a judgement as to whether the attacker is
offside. In the retinal image, it looks like the attacker is offside, because of the
position of the referee. They should be able to judeg the relative positions of the
people with respect to the pitch, but they are judging the relative positions based
on what they can see. So therefoer this could lead the AR to make an offside
judgement when they arent – this is a flag error (say they're offside when they're
not).
No Flag error: position of referee can also affect them from seeing when the
attacker actually is offside. So this is a no flag error.
Exp to test this:
 Set up a camera on top of a building and film a few games
 So they can work out when there is a real offside/not offside situation
 Identified 200 potential offside situations
 And 179 where the referre is beyond the defender (closer to the goal than the
defender)
 Found that 40 errors were made.
 Conclusions: allows them to make predictions about the number of flag errors
that will be made about the different locations of the players.
 Players on the outside of the defender: when on the far side of the pitch from the
AR, there will be more FEs than NFEs, whereas on the near side to the AR,
players on the outside of the defender will get more NFEs than FEs.
 When the attacker goes inside the defender: on the far side of the pitch more
NFEs than FE’s should occur, and more Fes than NFEs should occur on the near
side.
 Errors made by ARs in judging offside may often be the result of the relative
optical projections of the players on the ARs retina. This means that, regardless
of the quality of the AR, judgement errors are inevitable owing to the apparent
limitations of our perceptual system. Suggest that should use a better technique
such as a video.

**Mallo et al (2012): found that top class international referees experienced a
14% error rate when judging foul play incidents whereas assistant referees
presented a 13% error rate.
found that more errors are made within the second half of a game than the first
half, particularly in the last 15 minutes of a game. They suggest that this may be

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

Guaranteed quality through customer reviews

Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.

Quick and easy check-out

Quick and easy check-out

You can quickly pay through credit card for the summaries. There is no membership needed.

Focus on what matters

Focus on what matters

Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!

Frequently asked questions

What do I get when I buy this document?

You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.

Satisfaction guarantee: how does it work?

Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.

Who am I buying these notes from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller emroselewis. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for £6.49. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

63950 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy revision notes and other study material for 15 years now

Start selling

Recently viewed by you

Exam (elaborations) ·

(0)

Test Bank For Lewis Medical SurgicalNursing 12th edition by Mariam M Harding-Jeffrey-Kwong-Debra Hagler

Exam (elaborations) ·

(0)

Prep U for Videbeck's Psychiatric-Mental Health Nursing, 7th Edition Chapter 21: Somatic Symptom Illnesses

Exam (elaborations) ·

(0)

IPAP Pharmacology Block 1 | Questions with 100% Correct Answers | Verified | Latest Update 2024 | 20 Pages

Exam (elaborations) ·

(0)

TEST BANK FOR PHARMACOLOGY: A PATIENT-CENTERED NURSING PROCESS APPROACH, 10TH EDITION BY MCCUISTION

Exam (elaborations) ·

(0)

Exam (elaborations) NURS 432 (NURS 432) NURS 432 : Public health nursing 10th edition stanhope testbank

Exam (elaborations) ·

(0)

TEST BANK for Inquiry into Physics 8th Edition by Ostdiek All Chapters 1-12 covered ISBN: 978-1305959422

Exam (elaborations) ·

(0)

Test Bank - Biology: The Essentials, 5th Edition by Mariëlle Hoefnagels, All Chapters |Complete Guide A+

Lecture notes ·

(0)

Society and Justice: Race and Ethnicity - Sociology and Criminology (week 4 lecture and seminar notes)

Summary ·

(0)

Samenvatting Gebitsontwikkeling bij de mens - Gebitsontwikkeling, Occlusie en Articulatie (MHVP1CLL3B)
£6.49
  • (0)
Add to cart
Added