What does a negative PSNR value between am image and its filtered version indicate?

More Sushma T.V.'s questions See All

What is the significance level for fisher exact test if p value is 0?

in case of chi square testas well if p is 0.00 then how to interpret results and level of significance?

05 May 2024 7,662 3 View

I tried electrospinning poly (2-ethyl oxazoline) with water as a solvent but fiber formation was not promising, should i try other solvents?

voltage- 15 kv, flow rate- 0.5 mL/hr and distance from the needle tip to collector is 12 cm

01 November 2023 5,808 2 View

How the Intercalation of two powder sample can be carried?

If there are two nm size powdered particles, by which process can I disperse both of them into one another so that there properties didn't change?

10 October 2023 8,410 0 View

How can I do FT-IR of zn coated sand with kbr binder?

How will I make the pallet of Zn coated sand with KBr? Means for making pallet we need to crush the sample and KBr in fixed amount properly. So could I do the same thing with sand also? But I am...

30 September 2023 3,278 4 View

How do I know perfect colour of zno nanoparticle by green synthesised method. After calcination colour were changing ?

I wanted to know perfect colour of zno nanoparticle by green synthesised method. And how many degrees should i maintain in calcination periods below 300 or above 500 degrees.

11 July 2023 5,774 0 View

Please suggest some areas where ML can be applied in Software Engineering?

Topics to initiate...

27 February 2023 6,303 4 View

How to digest sodium which are present in the plant samples?

for practical purposes

19 February 2023 7,127 3 View

How about implementation of ML in Archaeology ? Its challenges....?

Researchers in this domain answer...

17 February 2023 7,503 3 View

How to do half mirror coating?

We are interested in making a lens that is similar to beam splitter coating in retinoscope (For UV light experiments)

14 March 2022 4,698 3 View

Does the Scrum framework improve the chances of success of large projects from the team members' point of view?

I am a master's student and writing my dissertation on the scrum framework and will appreciate it if I can get any lead for the same. What are all the questions I should ask team members and...

03 October 2021 1,883 1 View

Weak DAPI staining after immunohistochemistry - how to improve?

After immunohistochemistry of previously fixed in PFA and EtOH and then frozen 20 μm sections of zebrafish brain, DAPI staining is very weak (right) compared to the same sections stained without...

05 August 2024 9,637 2 View

Dirty and clean?

Hi everyone I need a file with a dirty and clean potato image

04 August 2024 7,199 4 View

Hello, regarding Mxene 2D titanium carbide?

I fabricated Ti3C2Tx using concentrated HF 40%, I plot an XRD as attached image below.. please let to know if I obtained it or not.

02 August 2024 6,789 4 View

Is the black sediment consider as sand? If not, how can I filter it out?

Hi researchers! I'm working on soil texture analysis, and the end result for sand is doubtful because there is black sediment appearing after drying, as shown in the figure. Is it considered sand?...

30 July 2024 557 2 View

IHC profiler in image j software. has anyone used it to quantify nuclear DAB positivity?

Dear researchers. I tried using the IHC PROFILER in image j to quantify nuclear DAB staining. I followed the instructions in the original article by "Varghese F, Bukhari AB, Malhotra R, De A...

29 July 2024 2,229 0 View

While using the IHC PROFILER plugin in image j software, to quantify the epithelial cytoplasmic DAB staining do you crop remove the stromal tissue?

My question pertaining to the DAB staining in cytoplasm of human oral squamous cell carcinoma tissue. When quantifying the epithelial cancer cells do we have to crop remove the stromal tissue?...

29 July 2024 2,682 6 View

Why in 2D image created by discovery studio 2021, the halogens appear as alkyl group?

In my molecule there is Chloro group at 2-position of phenyl ring, but in 2D image it appears as methyl showing no interaction.

28 July 2024 734 0 View

Can we isolate microplastic from sludge sample without using vacuum filter..?

isolation of microplastic from sludge sample using centrifugation ..

23 July 2024 6,418 0 View

Why is there a significant edge deviation in radar point cloud and camera registration?

The above are manually labeled extrinsic matrices based on the first image It can be seen that the projection error at the edge is large, while the error at the center is small. What could be the...

23 July 2024 7,479 3 View

About Machine Learning for Automated Diagnosis of Skin Cancer with Dermoscopy Images ?

Machine Learning for Automated Diagnosis of Skin Cancer with Dermoscopy Images

21 July 2024 5,471 0 View

Muhammad Ali

I suggest you follow https://au.mathworks.com/matlabcentral/answers/284335-negetive-valu-for-psnr-after-image-enhancment-in-matlab

https://www.researchgate.net/post/Can_anyone_explain_why_psnr_values_between_images_come_in_negative_values_and_snr_are_positive

Sushma T.V.

Thank you Muhammad.So it means PSNR cannot be negative. But I am not able to figure out why I am getting negative. Will check out.Thank you..

Abbas Cheddad

PSNR cannot be negative, probably you are calculating the correlation?