What is the different between orthorectification and rectification?

As a remote sensing practisioner, once should know the main difference between orthorectification and rectification process.

Airborne / satellite Image Rectification involve the process of correcting the x and y coordinate of the distorted image. It does not consider the terrain relief displacement of the image. Common technique that can be used are by using ground control point, map-to-image rectification, and image-to-image rectification.

For orthorectification, it involve the process of correcting the x, y, and z coordinate of the distorted image. It will consider the  terrain relief displacement. Generally, digital elevation model (Dem) is used as the reference to correct the image. However, ground control point that has height information ( x, y, z) can also be used.

That it for today. I try my best to share as much knowledge as i know. And do correct me if i am wrong. Thanks you.


How to view line weight in Autocad Map 3D or any version

How to view line weight in Autocad

How to see adjusted line weight in Autocad

Why my autocad line weight not change after edited

Hi, i believed that every newbie in Autocad will face this kind of problem where the line weight does not change as what we had adjusted. The problem is not the line weight do not change, but the default line weight viewer is turn OFF.

So, to turn ON back the line weight viewer,

Just type LWDISPLAY command. Then 0=turn off, 1=turn on

That it. Done. ^.^

Blog Content

What i plan to post in this blog
– remote sensing basic image processing tutorial such as : geometric correction, atmospheric correction, classification, mosaicking, and digitizing
– effective project presentation technique (how to make your slide presentation look great and attractive). I plan to write a short tutorial on how to create map layer using photoshop.
– creating 3d satellite image using arc scene and surfer 3d
And many more…

(Remote Sensing and GIS) Oil and Gas Company in Malaysia

I believed that working in oil and gas industry is everyone dream especially for fresh graduates.  According to “Top ten highest paying careers in engineering”, Petroleum engineer is the no.1 career that offer the highest payment followed by architecture and nuclear engineer. Besides, geoscientist which is the nearest career related to Remote Sensing and Geoinformation (GIS) is the no.9 top paying jobs in computers, mathematics and science industry. If we deeply look into the details of the industry background, oil and gas is one of the top high paying job internationally (including Malaysia).

So, here I list down some of the oil and gas company in Malaysia that hired remote sensing and GIS graduates.

1. Shell

2. Petronas

3. you know more? please write a comment here.

Thanks you

Remote Sensing Company Lists in Malaysia

Hi all, this week i got lots of assignment to be done. I think it is better for me to make a simple yet informative post. Specially posted to those who are searching internship or job vacancy in remote sensing fields in Malaysia. By the ways, most of the company also hired GIS (Geoinformation) background students. Enjoys!

Oil and Gas Company that used Remote Sensing in Malaysia

1. Petronas

2. Shell

Private Company

1. Imatera Digital Image Service Sdn Bhd

2. Geomatika Technology Sdn Bhd

3. Innovative Mapping Solution

4. Geoinfo Services Sdn Bhd

5. RS & GIS Consultancy Sdn Bhd

6. IR Technic Sdb Bhd

7. Geosense Sdn Bhd

8. ANR Research Sdn Bhd

9. Myspatial Sdn Bhd

10. Echo Broadband Sdb Bhd

11. JP Survey Head Quarters

12. Atama Tech Sdn Bhd

13. ATSB

14. Sky-shine Corporation

15. Aeroscan Precision (M) Sdn Bhd

16. ESRI Malaysia

17. Ground Data Solutions R&D Sdn Bhd

18. Airborne Informatics Sdn Bhd

19. AAM Group

If you know company that is not list down here, feel free to drop a comment so that i can update the list. Thanks you = )