7
153 Image Analysis Paul J. Boon – Sylvia C. Pont – Gert J. M. van Oortmerssen Acquisition and Visualization of Cross Section Surface Characteristics for Identification of Archaeological Ceramics Abstract: We describe a new system for digitizing ceramic fabric reference collections and a preliminary evaluation of its applicability to archaeological ceramics identification. An important feature in the analysis of ceramic fabrics is the surface texture of the fresh cross section. Visibility of surface characteristics and fab- ric constituents on images strongly improves with the ability to rotate a sample or vary the angle of illumi- nation. Interactive online catalogues, showing these variations using sequences of images, offer the means to imitate visual examination of the real sample. Accordingly, we have developed a system for automatic acquisition of image sequences and software to display and interact with the sequences on the web. Our system improves the visualization of the fabric characteristics to a substantial degree and may encourage the scientific use of online image reference collections. Furthermore, this system is applicable to other mate- rial categories where visual surface characteristics are important for identification. Introduction In archaeology, pottery is traditionally associated with typological studies. In recent years, ceramic sci- entists as well as archaeologists have supported the analysis of the material constituents of large quan- tities of ceramics. This research is known as fabric analysis. Fabrics research assists the archaeologist in the interpretation of the ceramics retrieved dur- ing field work. Another objective of fabrics research is the reconstruction of the pottery industry in the past. The methods employed include detailed visual examination using simple scientific techniques such as thin-sectioning and the assessment of colour and particle-size. These methods are suitable for study- ing large quantities of ceramics. Between 1977 and 2001, the Groningen Institute of Archaeology (GIA) conducted stratigraphical ex- cavations at the ancient settlement named Satricum, present-day Borgo Le Ferriere in South Lazio, 60 km SW of Rome (Italy). This archaeological project ex- amined areas of the settlement, a necropolis and a votive deposit on the acropolis, near the remains of a temple (MAASKANT-KLEIBRINK 1987, 1992; ATTEMA 2003). Simultaneously, from the mid-1980s onwards, another extensive GIA project focused on the de- velopment of settlements in the province of Lazio between the 9 th and 3 rd century BC. This project in- volved surveys on ploughed arable land. Building structures were measured and surface finds such as lithics, ceramic sherds and metal objects were col- lected and assessed (ATTEMA 1993). Both projects produced large quantities of ceramic sherds. Although the majority of ceramics from Sa- tricum were fragmented and damaged, detailed in- formation could still be retrieved to produce pottery typologies and dates. The survey material appeared to be more problematic. Due to repeated ploughing and weathering, most of the survey ceramics were damaged to a high extent. The lack of typological information complicated the interpretation and dating. Fabric analysis offered a tool for comparing the stratigraphically embedded material from Satri- cum to the geographically scattered finds from the surveys. Thousands of sherds dated to the period 900–300 BC have been subjected to fabric analysis during various campaigns. These sherds were clas- sified according to their material characteristics, each described with a fabric code. On the basis of general developments in pottery technology, as observed for the ceramics of Satricum, a substan- tial part of the survey sherds could be assigned to specific periods (www.lcm.rug.nl, under Research: fabric analysis on ceramics from Lazio, Italy). Physical reference collections are crucial for fab- rics research. During fieldwork, a small reference collection is often used. A strong selection, how- ever, does not cover the variety of characteristics present in most fabrics. Furthermore, the physical collection is not open to other researchers working in Latial archaeology. A web-based digital image reference collection would be ideal to solve some of the drawbacks mentioned. It can broaden or

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Page 1: THE VALUATION SERIES: COMMERCIAL REAL ESTATE 202 HOW … · A Bird’s Eye View of the Real Estate System Real estate is a vast and complex system, but the fundamentals are easy to

HOW IT WORKS

REDEFINING REAL ESTATE INVESTING

THE VALUATION SERIES: COMMERCIAL REAL ESTATE 202

Page 2: THE VALUATION SERIES: COMMERCIAL REAL ESTATE 202 HOW … · A Bird’s Eye View of the Real Estate System Real estate is a vast and complex system, but the fundamentals are easy to

© 2014 RealCrowd, Inc. All rights reserved. CRE202: HOW IT WORKS 2© 2014 RealCrowd, Inc. All rights reserved.

THE VALUATION SERIES

RealCrowd’s Valuation Series is a set of informative ebooks to enhance investors’ knowledge of commercial real estate investing, from the fundamentals of valuing commercial real estate to more advanced analysis techniques.

After completion of the Valuation Series you will know how to:

Understand different investment styles

Analyze market conditions

Evaluate risk profiles

Carry out cashflow analysis

Read financial models

Apply a quicksnap analysis

ABOUT REALCROWD

RealCrowd is a private, secure and simple-to-use online platform for accredited investors to access, review and invest in commercial real estate opportunities across the nation.

Using the platform, investors can inspect investment offers and materials, such as legal documents and due diligence items, allowing them to make informed investment decisions in what is widely considered one of the greatest wealth creation tools on the planet.

WWW.REALCROWD.COM

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© 2014 RealCrowd, Inc. All rights reserved. CRE202: HOW IT WORKS 3

INTRODUCTION TO CRE202

HOW IT WORKS

In the last entry of RealCrowd’s Valuation Series, we introduced the essential concepts and basic methods used to analyze real estate opportunities. Now that you can apply the ideas of risk and return to make useful comparisons between multiple properties, it’s time to get a bigger picture of the real estate system.

In CRE202: How it Works, we’ll look at the three main components of real estate: the rental market, the asset market, and the development industry. The interactions and behaviors of these components affect how much we pay for our apartments, how much our employers pay for our office space, and how much retailers charge us for goods and services. It is the key driver of how our cities are built. And it’s what ultimately determined returns to investors.

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© 2014 RealCrowd, Inc. All rights reserved. CRE202: HOW IT WORKS 4

A Bird’s Eye View of the Real Estate System

Real estate is a vast and complex system, but the fundamentals are easy to grasp. Concepts like “rent,” “occupancy,” and “construction costs” are part of the everyday language of real estate investment. Investors often acquire an intuitive grasp of such basics as a matter of necessity.

Yet by drilling down and taking a closer look at the basics, investors stand to gain a clearer understanding of their assumptions. A concrete understanding of how real estate works on a broad scale should help with making intelligent, forward-looking and comprehensive investment decisions.

This brief introduction aims to take the fundamentals of the real estate system and shed a little light on their connections, putting them into a larger, systematic framework.

It’s important to understand how commercial real estate works, because it offers some of the best risk adjusted returns when compared to other asset classes.

10%

8%

6%

4%

2%

0%5%

ANNUALIZED RISK (Standard Deviation)

AN

NU

ALI

ZE

D T

OTA

L R

ET

UR

N

10% 15% 20% 25%

20 YEAR RETURN/RISK PROFILE ACROSS MAJOR ASSET CLASSES

Core Commercial Real Estate

Government Bonds

Corporate Bonds

Large Cap Stocks

Small Cap Stocks

Commodities

Source: Thompson Reuters Datastream, Data from 1993-2013

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© 2014 RealCrowd, Inc. All rights reserved. CRE202: HOW IT WORKS 5

Broad Connections: Rental Market, Asset Market, and Development Industry

On the broadest scale, the real estate system is best thought about as a large feedback loop consisting of three main parts: the rental market, the asset market, and the development industry. In the order listed and driven by the overall economy, each “feeds” into the next, outputting (and inputting) a mix of information, money, goods or services.

It’s through the interactions and behaviors of these primary components that the “hows” and “whys” of real estate are determined. This brief introduction aims to take the fundamentals of the real estate system and shed a little light on their connections, putting them into a larger, systematic framework.

THE COMMERCIAL REAL ESTATE SYSTEM

DEVELOPMENT INDUSTRY

Increasing property values drive the incentive to develop, which

affects rental rates

ASSET MARKET

Property cash-flows increase and asset values go up

RENTAL MARKET

As the economy improves and rent increases

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© 2014 RealCrowd, Inc. All rights reserved. CRE202: HOW IT WORKS 6

The Rental Market consists of property owners (the supply side) and tenants (the demand side) which contributes to rent and occupancy levels.

These parts work together in the familiar way: rents increase or decrease based on available space weighed against demand for that space. This is nothing more than the dynamics of supply and demand applied to rental properties, with the price of rent fluctuating accordingly. When available space remains constant and demand strengthens, rental prices increase. Likewise, if space remains constant and demand weakens, then rental prices decrease in response.

One of a real estate operator’s objectives is to maximize rental income, which is the primary link between the rental market and the asset market, and acts as the key determining factor of a real estate asset’s operating cash flow, and ultimately its overall market value.

RENTAL MARKET

LANDLORDS

(supplying space)

TENANTS

(leasing space)

SUPPLY & DEMAND AFFECTS:• Market Rental Rates• Square Footage Leased (Absorption)• Rental Revenue of Assets

The Rental Market

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© 2014 RealCrowd, Inc. All rights reserved. CRE202: HOW IT WORKS 7

The Asset Market

The Asset Market, as with the rental market, also has a supply side and a demand side, both of which consist of invested owners looking to sell real estate assets on the one hand, and investors looking to buy those assets on the other. The behavior of real estate investors in the real estate asset market is determined by perceptions of comparative investment opportunities in other capital markets, say, the stock market, as compared to present risks and returns in real estate.

These comparisons and perceptions, along with forecasts of the future price of rent in the rental market, determine the market capitalization rates (cap rates), or yield, that investors consider acceptable in real estate deals. That is, cap rates must be high enough compared to other investment opportunities or investors will look elsewhere for returns.

ASSET MARKET

SELLERS

(selling assets)

BUYERS

(purchasing assets)

SUPPLY & DEMAND AFFECTS:• Sale Price• Number of Transactions• Capitalization Rates (Return)

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© 2014 RealCrowd, Inc. All rights reserved. CRE202: HOW IT WORKS 8

The Development Industry

The value of a real estate asset, determined by the interaction of operating cash flows and cap rates, brings us to the third and last main component of the real estate system, the Development Industry. The activities of the development industry determines the availability of space in the rental market.

Recall, the main response to weakening or strengthening demand in the rental market impacts rental prices. There is another possible response, however, which is to expand or contract the amount of available space on the market.

Physical property is more inelastic than rental price, however. Adding or subtracting space is an expensive, complicated, and time-consuming enterprise. As a result, it happens under limited circumstances only. Specifically, the development industry adds more space to the market when asset values equal or exceed development costs. When asset values meet that criteria, then the rental market’s supply side is expanded.

DEVELOPMENT INDUSTRY

DEVELOPERS

(constructing buildings)

LANDLORDS/TENANTS

(demanding space)

SUPPLY & DEMAND AFFECTS:• Number of buildings being developed• Construction Costs• Rental Rates

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© 2014 RealCrowd, Inc. All rights reserved. CRE202: HOW IT WORKS 9

The Real Estate System Affects the Daily Lives of Everyone

This brings us full circle in the main loop in the real estate system. We’ve seen that the rental market outputs operating cash flows into the asset market, which then interacts with investors to determine cap rates returns and asset values, which, finally, signal the development industry to build more space if asset values are high enough.

The real estate system affects how much rent we pay for our apartments, how much our employers pay for our office space, and how much retailers charge us for goods and services. It is the key driver of how our cities are built. And it is ultimately what determines returns to investors.

Of course, this loop is not self-contained. For instance, demand fluctuates according to trends in national and local economies, and, as mentioned, the cap rates returns that investors require are determined through comparison to opportunities in other capital markets. Nevertheless, the value and trends of real estate assets can be thought of as a result of the interactions of the three main components we’ve outlined: the rental market, the asset market and the development industry.

ONCE YOU KNOW THE CYCLICAL NATURE OF THE INDUSTRY, YOU’LL BE BETTER EQUIPPED TO INVEST.

DEVELOPMENT INDUSTRY

ASSET MARKET

RENTAL MARKET

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