This document provides an overview of photogrammetry, including a brief history of aerial photography, definitions of key terms, and descriptions of different types of photogrammetry and imaging. It discusses the general photogrammetric process and products that can be created. Specific topics covered include the development of aerial photography from the 1850s onwards, definitions of photogrammetry, close range, terrestrial, aerial, and space photogrammetry, types of aerial images, photogrammetric mapping techniques, and historical photogrammetric plotting instruments.
Aerial surveying technology is utilized in a wide range of fields throughout the world. These range from the creation of maps, to terrain analysis and research (rivers, soil erosion, coasts, etc.), urban planning, road planning (roads, rails, etc.), and vegetation research (forests, agriculture, lakes and marshland, etc.).
Aerial surveying technology is utilized in a wide range of fields throughout the world. These range from the creation of maps, to terrain analysis and research (rivers, soil erosion, coasts, etc.), urban planning, road planning (roads, rails, etc.), and vegetation research (forests, agriculture, lakes and marshland, etc.).
This presentation about photogrammetry survey, this presentation gives a complete detail of photogrammetry survey. Photogrammetry survey is a powerful technique used in various industries to obtain accurate measurements and three-dimensional (3D) data from photographs. It involves the process of extracting precise geometric information from images using specialized software, providing a cost-effective and efficient method for capturing and analysing spatial data.
THE IMPORTANCE OF MARTIAN ATMOSPHERE SAMPLE RETURN.Sérgio Sacani
The return of a sample of near-surface atmosphere from Mars would facilitate answers to several first-order science questions surrounding the formation and evolution of the planet. One of the important aspects of terrestrial planet formation in general is the role that primary atmospheres played in influencing the chemistry and structure of the planets and their antecedents. Studies of the martian atmosphere can be used to investigate the role of a primary atmosphere in its history. Atmosphere samples would also inform our understanding of the near-surface chemistry of the planet, and ultimately the prospects for life. High-precision isotopic analyses of constituent gases are needed to address these questions, requiring that the analyses are made on returned samples rather than in situ.
Earliest Galaxies in the JADES Origins Field: Luminosity Function and Cosmic ...Sérgio Sacani
We characterize the earliest galaxy population in the JADES Origins Field (JOF), the deepest
imaging field observed with JWST. We make use of the ancillary Hubble optical images (5 filters
spanning 0.4−0.9µm) and novel JWST images with 14 filters spanning 0.8−5µm, including 7 mediumband filters, and reaching total exposure times of up to 46 hours per filter. We combine all our data
at > 2.3µm to construct an ultradeep image, reaching as deep as ≈ 31.4 AB mag in the stack and
30.3-31.0 AB mag (5σ, r = 0.1” circular aperture) in individual filters. We measure photometric
redshifts and use robust selection criteria to identify a sample of eight galaxy candidates at redshifts
z = 11.5 − 15. These objects show compact half-light radii of R1/2 ∼ 50 − 200pc, stellar masses of
M⋆ ∼ 107−108M⊙, and star-formation rates of SFR ∼ 0.1−1 M⊙ yr−1
. Our search finds no candidates
at 15 < z < 20, placing upper limits at these redshifts. We develop a forward modeling approach to
infer the properties of the evolving luminosity function without binning in redshift or luminosity that
marginalizes over the photometric redshift uncertainty of our candidate galaxies and incorporates the
impact of non-detections. We find a z = 12 luminosity function in good agreement with prior results,
and that the luminosity function normalization and UV luminosity density decline by a factor of ∼ 2.5
from z = 12 to z = 14. We discuss the possible implications of our results in the context of theoretical
models for evolution of the dark matter halo mass function.
Richard's entangled aventures in wonderlandRichard Gill
Since the loophole-free Bell experiments of 2020 and the Nobel prizes in physics of 2022, critics of Bell's work have retreated to the fortress of super-determinism. Now, super-determinism is a derogatory word - it just means "determinism". Palmer, Hance and Hossenfelder argue that quantum mechanics and determinism are not incompatible, using a sophisticated mathematical construction based on a subtle thinning of allowed states and measurements in quantum mechanics, such that what is left appears to make Bell's argument fail, without altering the empirical predictions of quantum mechanics. I think however that it is a smoke screen, and the slogan "lost in math" comes to my mind. I will discuss some other recent disproofs of Bell's theorem using the language of causality based on causal graphs. Causal thinking is also central to law and justice. I will mention surprising connections to my work on serial killer nurse cases, in particular the Dutch case of Lucia de Berk and the current UK case of Lucy Letby.
Observation of Io’s Resurfacing via Plume Deposition Using Ground-based Adapt...Sérgio Sacani
Since volcanic activity was first discovered on Io from Voyager images in 1979, changes
on Io’s surface have been monitored from both spacecraft and ground-based telescopes.
Here, we present the highest spatial resolution images of Io ever obtained from a groundbased telescope. These images, acquired by the SHARK-VIS instrument on the Large
Binocular Telescope, show evidence of a major resurfacing event on Io’s trailing hemisphere. When compared to the most recent spacecraft images, the SHARK-VIS images
show that a plume deposit from a powerful eruption at Pillan Patera has covered part
of the long-lived Pele plume deposit. Although this type of resurfacing event may be common on Io, few have been detected due to the rarity of spacecraft visits and the previously low spatial resolution available from Earth-based telescopes. The SHARK-VIS instrument ushers in a new era of high resolution imaging of Io’s surface using adaptive
optics at visible wavelengths.
Introduction:
RNA interference (RNAi) or Post-Transcriptional Gene Silencing (PTGS) is an important biological process for modulating eukaryotic gene expression.
It is highly conserved process of posttranscriptional gene silencing by which double stranded RNA (dsRNA) causes sequence-specific degradation of mRNA sequences.
dsRNA-induced gene silencing (RNAi) is reported in a wide range of eukaryotes ranging from worms, insects, mammals and plants.
This process mediates resistance to both endogenous parasitic and exogenous pathogenic nucleic acids, and regulates the expression of protein-coding genes.
What are small ncRNAs?
micro RNA (miRNA)
short interfering RNA (siRNA)
Properties of small non-coding RNA:
Involved in silencing mRNA transcripts.
Called “small” because they are usually only about 21-24 nucleotides long.
Synthesized by first cutting up longer precursor sequences (like the 61nt one that Lee discovered).
Silence an mRNA by base pairing with some sequence on the mRNA.
Discovery of siRNA?
The first small RNA:
In 1993 Rosalind Lee (Victor Ambros lab) was studying a non- coding gene in C. elegans, lin-4, that was involved in silencing of another gene, lin-14, at the appropriate time in the
development of the worm C. elegans.
Two small transcripts of lin-4 (22nt and 61nt) were found to be complementary to a sequence in the 3' UTR of lin-14.
Because lin-4 encoded no protein, she deduced that it must be these transcripts that are causing the silencing by RNA-RNA interactions.
Types of RNAi ( non coding RNA)
MiRNA
Length (23-25 nt)
Trans acting
Binds with target MRNA in mismatch
Translation inhibition
Si RNA
Length 21 nt.
Cis acting
Bind with target Mrna in perfect complementary sequence
Piwi-RNA
Length ; 25 to 36 nt.
Expressed in Germ Cells
Regulates trnasposomes activity
MECHANISM OF RNAI:
First the double-stranded RNA teams up with a protein complex named Dicer, which cuts the long RNA into short pieces.
Then another protein complex called RISC (RNA-induced silencing complex) discards one of the two RNA strands.
The RISC-docked, single-stranded RNA then pairs with the homologous mRNA and destroys it.
THE RISC COMPLEX:
RISC is large(>500kD) RNA multi- protein Binding complex which triggers MRNA degradation in response to MRNA
Unwinding of double stranded Si RNA by ATP independent Helicase
Active component of RISC is Ago proteins( ENDONUCLEASE) which cleave target MRNA.
DICER: endonuclease (RNase Family III)
Argonaute: Central Component of the RNA-Induced Silencing Complex (RISC)
One strand of the dsRNA produced by Dicer is retained in the RISC complex in association with Argonaute
ARGONAUTE PROTEIN :
1.PAZ(PIWI/Argonaute/ Zwille)- Recognition of target MRNA
2.PIWI (p-element induced wimpy Testis)- breaks Phosphodiester bond of mRNA.)RNAse H activity.
MiRNA:
The Double-stranded RNAs are naturally produced in eukaryotic cells during development, and they have a key role in regulating gene expression .
Richard's aventures in two entangled wonderlandsRichard Gill
Since the loophole-free Bell experiments of 2020 and the Nobel prizes in physics of 2022, critics of Bell's work have retreated to the fortress of super-determinism. Now, super-determinism is a derogatory word - it just means "determinism". Palmer, Hance and Hossenfelder argue that quantum mechanics and determinism are not incompatible, using a sophisticated mathematical construction based on a subtle thinning of allowed states and measurements in quantum mechanics, such that what is left appears to make Bell's argument fail, without altering the empirical predictions of quantum mechanics. I think however that it is a smoke screen, and the slogan "lost in math" comes to my mind. I will discuss some other recent disproofs of Bell's theorem using the language of causality based on causal graphs. Causal thinking is also central to law and justice. I will mention surprising connections to my work on serial killer nurse cases, in particular the Dutch case of Lucia de Berk and the current UK case of Lucy Letby.
Slide 1: Title Slide
Extrachromosomal Inheritance
Slide 2: Introduction to Extrachromosomal Inheritance
Definition: Extrachromosomal inheritance refers to the transmission of genetic material that is not found within the nucleus.
Key Components: Involves genes located in mitochondria, chloroplasts, and plasmids.
Slide 3: Mitochondrial Inheritance
Mitochondria: Organelles responsible for energy production.
Mitochondrial DNA (mtDNA): Circular DNA molecule found in mitochondria.
Inheritance Pattern: Maternally inherited, meaning it is passed from mothers to all their offspring.
Diseases: Examples include Leber’s hereditary optic neuropathy (LHON) and mitochondrial myopathy.
Slide 4: Chloroplast Inheritance
Chloroplasts: Organelles responsible for photosynthesis in plants.
Chloroplast DNA (cpDNA): Circular DNA molecule found in chloroplasts.
Inheritance Pattern: Often maternally inherited in most plants, but can vary in some species.
Examples: Variegation in plants, where leaf color patterns are determined by chloroplast DNA.
Slide 5: Plasmid Inheritance
Plasmids: Small, circular DNA molecules found in bacteria and some eukaryotes.
Features: Can carry antibiotic resistance genes and can be transferred between cells through processes like conjugation.
Significance: Important in biotechnology for gene cloning and genetic engineering.
Slide 6: Mechanisms of Extrachromosomal Inheritance
Non-Mendelian Patterns: Do not follow Mendel’s laws of inheritance.
Cytoplasmic Segregation: During cell division, organelles like mitochondria and chloroplasts are randomly distributed to daughter cells.
Heteroplasmy: Presence of more than one type of organellar genome within a cell, leading to variation in expression.
Slide 7: Examples of Extrachromosomal Inheritance
Four O’clock Plant (Mirabilis jalapa): Shows variegated leaves due to different cpDNA in leaf cells.
Petite Mutants in Yeast: Result from mutations in mitochondrial DNA affecting respiration.
Slide 8: Importance of Extrachromosomal Inheritance
Evolution: Provides insight into the evolution of eukaryotic cells.
Medicine: Understanding mitochondrial inheritance helps in diagnosing and treating mitochondrial diseases.
Agriculture: Chloroplast inheritance can be used in plant breeding and genetic modification.
Slide 9: Recent Research and Advances
Gene Editing: Techniques like CRISPR-Cas9 are being used to edit mitochondrial and chloroplast DNA.
Therapies: Development of mitochondrial replacement therapy (MRT) for preventing mitochondrial diseases.
Slide 10: Conclusion
Summary: Extrachromosomal inheritance involves the transmission of genetic material outside the nucleus and plays a crucial role in genetics, medicine, and biotechnology.
Future Directions: Continued research and technological advancements hold promise for new treatments and applications.
Slide 11: Questions and Discussion
Invite Audience: Open the floor for any questions or further discussion on the topic.
2. LLeeccttuurree OOuuttlliinnee
• Introduction to Photogrammetry: History of the
development of Aerial Surveying. The Geometry
of the titled photography.
• The characteristics of the Aerial Camera, Auxiliary
equipment used in aerial Photography.
Photographic mission planning. Understanding
aerial photograph (Principle information etc…).
Principles of stereoscopic vision, definition of
parallax, the basic parallax formula.
• Stereoscopic Viewing methods, Distortions in a
field photograph.
3. LLeeccttuurree OOuuttlliinnee
•Geometry of stereo pairs, Theory of orientation: Inner
orientation, Relative orientation, Absolute orientation.
•Problems in relative orientation due to topography.
•Photogrammetric plotting Instruments (Analogue).
Ground control.
•Model Deformation. Numerical Relative Orientation.
•Photographic coordinate system. Mono comparator,
Stereo comparator measurements of photo
coordinates, Transformation.
•Elementary methods of planimetric mapping with
vertical photographs. Field compilation and map
making.
7. Definitions:
DDeeffiinniittiioonn
Remote Photogrammetry
”The science or art of obtaining reliable measurements by
means of photographs.”
”Photogrammetry is the art, science, and technology of
obtaining reliable information about physical objects and the
environment through the processes of recording, measuring,
and interpreting photographic images and patterns of
electromagnetic radiant energy and other phenomena.”
(ASPRS, 1980)
8. Why Photogrammetry………
RAF's wartime reconnaissance
photos -archive
Dramatic pictures illustrate Allied assault on
D-Day and bombing raids over Germany
9. Photogrammetry………
Analog PPhhoottooggrraammmmeettrryy
Using optical, mechanical and electronical components, and
where the images are hardcopies. Re-creates a 3D model
for measurements in 3D space.
AAnnaallyyttiiccaall PPhhoottooggrraammmmeettrryy
The 3D modelling is mathematical (not re-created) and
measurements are made in the 2D images.
DDiiggiittaall PPhhoottooggrraammmmeettrryy
Analytical solutions applied in digital images. Can also
incorporate computer vision and digital image processing
techniques.
or Softcopy Photogrammetry
”Softcopy” refers to the display of a digital image, as opposed
to a ”hardcopy” (a physical, tangible photo).
10. Photograph Image
A scene which was detected as well
as recorded on film.
A scene which was detected
electronically.
Chemical reactions on a light
sensitive film detects the intensity of
the incoming energy.
Generate an electrical signal
proportional to the incoming
energy.
Simple, cheap, well known. Can sense in many wavelengths,
data can be easily converted
into digital form for automated
processing.
Only sense in the wavelength of
0.3 – 0.9 μm, manual interpretation.
Complex,
Expensive sensors
Photograph vs. Image
11. Relationships of the Mapping Sciences as they relate to
Mathematics and Logic, and the Physical, Biological, and Social
Sciences
14. HHiissttoorryy
Origins of Remote Sensing
Remote sensing began with
aerial photography
First photographs taken in
1839
15. HHiissttoorryy
Paris by Nadar, circa
1858
1858 Gasper Felix Tournachon "Nadar" takes
photograph of village of Petit Bicetre in France from
a balloon.
23. Why Photogrammetry
•Extracting geometrical information and
producing maps.
•Cheaper than terrestrial methods.
•Extracting qualitative information.
•High speed of map generation.
24. Why Photogrammetry………
Ideal technology when measuring objects such
as
– Vast regions to be mapped
– Irregular shapes and
– Objects that are too
• Hot or cold
• Soft
• Delicate
• Inaccessible
• Toxic
• Radioactive to touch
25. Photogrammetric products
Planimetric maps –
Planimetric elements in geography are those features that are
independent of elevation, such as roads, building footprints, and
rivers and lakes. They are represented on two-dimensional maps
as they are seen from the air, or in aerial photography. These
features are often digitized from orthorectified aerial photography
into data layers that can be used in analysis and cartographic
outputs.
Topographic maps –
A type of map characterized by large-scale detail and quantitative
representation of relief, using contour lines. Traditional definitions
require a topographic map to show both natural and man-made
features. A topographic map is typically published as a map
series.
26. Photogrammetric products……
3D points
LiDAR has become
the technology of
choice for deriving
highly accurate
terrain data and 3D
models, and it is
commonly used for a
variety of mapping
applications.
29. General Flow
Real World
(Earth)
Sensor
(Camera)
Data Source
(Images)
Image Refinement
& measurement
Refined
Image
Observation
Products
•Maps
•DEM
•Otrthophoto
Mathematica
l Models
Decision
Making
Data
Analysis
32. Photogrammetric Types
Photogrammetric Types from Applications Point
of View (d is distance from camera to object)
Close Range Photogrammetry d<10 m
Terrestrial Photogrammetry 10 m<d<100 m
Aerial Photogrammetry 2 km<d<10 km
Space Photogrammetry 30 km<d
47. Types of photographs (categorized by tilt)
• Vertical - camera axis as nearly vertical as
Possible
• Oblique - camera axis intentionally tilted
• Low Oblique
• High Oblique
48. Types of photographs
Aerial Terrestrial
Vertical
Oblique
Truly Vertical
High oblique
(includes horizon)
Tilted
(1deg< angle < 3deg)
Low oblique
(does not include horizon)
52. Vertical aerial images are not map!
• Maps are based on parallel projection while
photo has central projection
• Maps have a unique scale while image scale
varies depending on terrain relief
• Maps are interpreted while photos should be
interpreted
• Photo is detailed while maps are generalized
61. Taking Vertical Aerial Photographs
• Position of camera at each exposure called
exposure station
• Flying height – altitude of camera
• Adjacent flight strips overlap – side overlap
• Block of photos – photos of 2 or more side
lapping strips