Digital Image Creation and Development: A Comprehensive Report

Desklib provides solved assignments and past papers to help students succeed.

DIGITAL IMAGE CREATION AND
DEVELOPMENT

Contents
Introduction................................................................................................................................6
LO1 Be able to create digital images for specific purposes.......................................................7
AC1.1 Identify sources for digital images.............................................................................7
AC1.2 Create digital images from sources for specific purposes........................................13
LO2 Be able to process digital images.....................................................................................18
AC2.1 Identify file formats and fundamentals required to process image data...................18
AC 2.2 Apply digital data management techniques to store imagery..................................23
LO3 Be able to manipulate digital images to meet requirements............................................34
AC3.1 Use software tools to manipulate images.................................................................34
AC 3.2 Prepare image files for output.................................................................................64
LO4 Understand the use of digital images...............................................................................65
AC 4.1 Evaluate own use of digital images in meeting requirements.................................65
AC 4.2 Evaluate others’ use of digital images in meeting specified purposes....................66
Conclusion................................................................................................................................68
References................................................................................................................................69
List of Figures
Figure 1: Digital Camera............................................................................................................8
Figure 2: Video camera..............................................................................................................9
Figure 3: Mobile Phone's Camera..............................................................................................9
Figure 4: An original Artwork.................................................................................................10
Figure 5: DVD/CD...................................................................................................................10
Figure 6: Snapshot from a video..............................................................................................11
Figure 7: Magazine picture......................................................................................................11
1

Figure 8: A picture downloaded from internet.........................................................................12
Figure 9: The Front View.........................................................................................................13
Figure 10: The Reception.........................................................................................................14
Figure 11: Selfie in front of the hotel.......................................................................................15
Figure 12: The Conference Hall...............................................................................................16
Figure 13: The Swimming Pool...............................................................................................17
Figure 14: The Dining Hall......................................................................................................17
Figure 15: GIF icon..................................................................................................................18
Figure 16: JPEG/JPG icon.......................................................................................................19
Figure 17: PNG icon................................................................................................................19
Figure 18: PSD icon.................................................................................................................20
Figure 19: TIF/TIFF icon.........................................................................................................20
Figure 20: SVG icon................................................................................................................21
Figure 21: The front view........................................................................................................26
Figure 22: Metadata (The front view)......................................................................................27
Figure 23: Reception................................................................................................................27
Figure 24: Metadata (The Reception)......................................................................................28
Figure 25: Selfie has taken outside the hotel...........................................................................29
Figure 26: Metadata (The selfie)..............................................................................................30
Figure 27: Conference Hall......................................................................................................31
Figure 28: Metadata (The Conference Hall)............................................................................31
Figure 29: Swimming Pool......................................................................................................32
Figure 30: Metadata (The Swimming Pool).............................................................................32
Figure 31: Dining Hall.............................................................................................................33
Figure 32: Metadata (The Dining Hall)...................................................................................33
Figure 33: Front view before Colour Balancing......................................................................34
2

Figure 34: Front view after Colour Balancing.........................................................................35
Figure 35: Reception before colour balancing.........................................................................35
Figure 36: Reception after colour balancing............................................................................36
Figure 37: Selfie before colour balancing................................................................................36
Figure 38: Selfie after colour balancing...................................................................................37
Figure 39: Conference Hall before colour balancing...............................................................37
Figure 40: Conference Hall after colour balancing..................................................................38
Figure 41: Dining Hall before colour balancing......................................................................38
Figure 42: Dining Hall after colour balancing.........................................................................39
Figure 43: Swimming Pool before colour balancing...............................................................39
Figure 44: Swimming Pool after colour balancing..................................................................40
Figure 45: Front view before Hue............................................................................................40
Figure 46: Front view after Hue...............................................................................................41
Figure 47: Reception before hue..............................................................................................41
Figure 48: Reception after hue.................................................................................................42
Figure 49: Selfie before hue.....................................................................................................42
Figure 50: Selfie after hue........................................................................................................43
Figure 51: Conference Hall before hue....................................................................................43
Figure 52: Conference Hall after hue.......................................................................................44
Figure 53: Dining Hall before hue...........................................................................................44
Figure 54: Dining Hall after hue..............................................................................................45
Figure 55: Swimming Pool before hue....................................................................................45
Figure 56: Swimming Pool after hue.......................................................................................46
Figure 57: Front view before cropping....................................................................................46
Figure 58: Front view after cropping.......................................................................................47
Figure 59: Reception before cropping......................................................................................47
3

Figure 60: Reception after cropping........................................................................................48
Figure 61: Selfie before cropping............................................................................................48
Figure 62: Selfie after cropping...............................................................................................49
Figure 63: Conference Hall before cropping...........................................................................49
Figure 64: Conference Hall after cropping..............................................................................50
Figure 65: Dining Hall before cropping...................................................................................50
Figure 66: Dining Hall after cropping......................................................................................51
Figure 67: Swimming Pool before cropping............................................................................51
Figure 68: Swimming after cropping.......................................................................................52
Figure 69: Front view before Brightness/Contrast adjustment................................................52
Figure 70: Front view after Brightness/Contrast adjustment...................................................53
Figure 71: Reception before Brightness/Contrast adjustment.................................................53
Figure 72: Reception after Brightness/Contrast adjustment....................................................54
Figure 73: Selfie before Brightness/Contrast adjustment........................................................54
Figure 74: Selfie after Brightness/Contrast adjustment...........................................................55
Figure 75: Conference Hall before Brightness/Contrast adjustment.......................................55
Figure 76: Conference Hall after Brightness/Contrast adjustment..........................................56
Figure 77: Dining Hall before Brightness/Contrast adjustment...............................................56
Figure 78: Dining hall Brightness/Contrast adjustment...........................................................57
Figure 79: Swimming Pool before Brightness/Contrast adjustment........................................57
Figure 80: Conference Hall after Brightness/Contrast adjustment..........................................58
Figure 81: Front view before Filters........................................................................................58
Figure 82: Front view after Filters...........................................................................................59
Figure 83: Reception before Filters..........................................................................................59
Figure 84: Reception after Filters............................................................................................60
Figure 85: Selfie before Filters................................................................................................60
4

Figure 86: Selfie after Filters...................................................................................................61
Figure 87: Conference Hall before Filters...............................................................................61
Figure 88: Conference Hall after Filters..................................................................................62
Figure 89: Dining Hall before Filters.......................................................................................62
Figure 90: Dining Hall after Filters..........................................................................................63
Figure 91: Swimming Pool before Filters................................................................................63
Figure 92: Swimming Pool after Filters...................................................................................64
Figure 93: The Hotel Logo.......................................................................................................64
List of Tables
Table 1: Evaluation of Website................................................................................................65
Table 2: CRAAP analysis report..............................................................................................66
Table 3: Pingdom Test evaluation report.................................................................................67
5

Introduction
This assessment report aims at developing skills and knowledge about various tools and
techniques which are used to support the sourcing, creation, development, and processing of
digital images. The practical work to be carried out, while understanding the digital imaging
processes, will be described in this report in detail including relative evidence of the work
done.
6

LO1 Be able to create digital images for specific purposes
AC1.1 Identify sources for digital images
Digital Imaging
It can be called as the electronic capturing and displaying of a photo or image. Usually, the
tool needed for this a digital camera and a computer in order to process such images. Images,
as known to most, can be generally divided into coloured and B&W (Black and White).
Further, the coloured images can have one of the two colouring formats: CMYK or RGB.
And the sources defined for digital images is not just the digital camera, but images already
being captured and stored by someone else can also be used. And based on this the sources of
images are categorised into primary, secondary and sometimes two more categories:
Sampling, and recording. The categories are explained below.
Primary Source
Primary sources are those sources from which original and authentic information, here,
images, are taken from. They provide a first-hand detailing of events, condition, or actions.
These are images created of captured by first recorders or witnesses of any event. However,
the most useful of such resources are those who were captured or created most recently to the
time one is searching for. A few examples of primary sources for digital images are Digital
and video cameras, CDs, DVDs etc.
Secondary Sources
These are those images which are not original but are an art work of someone else from
whom they are taken legally (suggested). They sometimes are a comment, discussion or
modification of existing primary sources, and hence are termed as secondary, meaning
derived after or on primary category. They usually lack the immediacy and freshness of some
original image. A few examples of secondary sources for digital images are Magazines,
Internet etc.
Sampling
Sampling is a process for digitalisation of analogue images. The analog image function F (x,
y) is needed to be digitalised in amplitude and spatially, both. And for that, a digitizer or
frame grabber is used in order to sample the analog video signal. The digitized image’s
7

spatial resolution is determined by the rate of sampling and the magnitude of the image is
detailed by a digital value for image processing (Anbarjafari, 2019).
Recording
It is one method to record light radiations with the use of devices (e.g., sensors). The device
is set to a desired luminous intensity, converts this intensity into an electrical charge, and
loads it as the voltage signal, and being photosensitive. These sensors are capable of so. Such
a device used for the purpose of recording digital images takes images in different forms and
couples them to create a panoramic picture through some software for image processing.
Examples of such devices are: Charged Couple Device (CCD sensor), Complementary
Metallic Oxide Semiconductors (CMOS sensor) etc.
The various sources for digital images –
Primary Sources –
 Digital Cameras – is the most basic source device to for digital images. It captures
digital images and saves them in JPG format.
Figure 1: Digital Camera
 Video Cameras – are same as digital cameras. They capture digital videos and the
videos can be paused and that paused frame can be used as an image.
8

Figure 2: Video camera
 Mobile phones – too can be used as a source for digital images. They are equipped
with high-quality cameras nowadays and usually save the image in JPG format.
Figure 3: Mobile Phone's Camera
 Artwork, Posters – are the original pieces of work from artists or designers. They are
hence counted in primary category of sources.
9

Figure 4: An original Artwork
 Drives, CDs, DVDs – can also be a primary source for digital images. The original
files captured in devices are stored in drives, CDs etc. and they can be put into any
relevant work.
Figure 5: DVD/CD
10

Secondary Sources -
 Still, from videos – Videos captured by someone when are used to take snapshots by
someone else, they are called as a secondary source for that shot or image.
Figure 6: Snapshot from a video
 Images from magazines – images can be captured from magazines either by capturing
directly from a digital camera or by cutting it first and then capturing.
Figure 7: Magazine picture
11