Starry Night Panorama with Advanced Feature Extraction and Star Stitching

Panoramic photography involves merging multiple photos of the same scene, each with overlapping views, to create a detailed image. When combining astrophotography with panoramic landscapes, challenges arise from image noise and subject motion. To address this, incorporating spatially variant registration steps in the panorama process can merge several shorter exposures into a final image with reduced noise and without motion artifacts. This method tackles two main issues in creating night sky panoramas: low signal-to-noise ratio (SNR) and motion blur.Initially, the images are divided into land and sky segments. Then, potential star locations are identified from a star image. Extracting features from night images is complex, and the Scale-Invariant Feature Transform (SIFT) algorithm is chosen for its robustness to rotation, scale changes, and noise. In astrophotography panoramas, more features need extraction, and SIFT performs well compared to other methods.Next, matching star features between images with common points allows combining two short exposures. A seamless blending technique removes visible seams between merged images. Compensating for star motion involves warping images using local transformations for smooth alignment. Finally, the combined exposures are stitched into a panorama using a spherical projection method

Effects of Nutrient Management on Growth Indices and Grain Yield of Different Crop Establishment Methods in Rice (Oryza sativa L.)

A field experiment was conducted during two consecutive Kharif seasons, 2021 and 2022 at Agronomy Research Farm, Acharya Narendra Deva University of Agriculture and Technology, Kumarganj Ayodhya (Uttar Pradesh, India) to assess the effect of crop establishment methods and nutrient management on growth indices and yield of rice (Oryza sativa L.). The experiment was conducted in split plot design which comprised of four crop establishment methods. There are: M1 transplanting (Conventional); M2 direct seeded rice; M3 drum seeded rice and M4 broadcasting sprouted seed under puddled condition were kept in main plot while five nutrient management practices were kept in sub plot. They are: N0 Control; N1 Recommended dose of fertilizer (150:60:40 kg/ha NPK); N2: RDF + Zn@5kg/ha; N3: RDF + S@40 kg/ha; N4: RDF + Zn + S (@5 + 40 kg/ha). The experiment was replicated three times. Significantly higher crop growth rate, absolute growth rate, relative growth rate and net assimilation rate growth and grain yield was recorded in transplanting methods during both the years of investigation. Among the nutrients management; higher value of all the growth indices and grain yield was recorded in 150:60:60 kg/ha NPK + Zn (5 kg/ha) + Sulphur (40 kg/ha)

Effect of Different Crop Establishment Methods and Weed Management Practices on Growth Indices and Yield of Rice (Oryza sativa L.)

The field experiment was conducted on Agronomy research farm of Acharya Narendra Deva University of Agriculture and Technology Kumarganj Ayodhya (Uttar Pradesh, India) during Kharif season 2021 and 2022. The experiment was laid out in split-plot-design with three replications. Four establishment methods viz., Direct seeded rice, Drum seeder technique, Transplanted rice and System of rice intensification (SRI) were taken in main plot, and six weed management practices viz., Penoxsulam 22.5 g ha-1 at 2-3 leaf stage of weeds DAS/DAT, Penoxsulam 22.5 g ha-1 at 2-3 leaf stage of weeds fb one hand weeding at 35 DAS/DAT, Bispyribac sodium (10%) 25 g a.i. ha-1 at 15 DAS/DAT, Bispyribac sodium (10%) 25 g a.i. ha-1 at 15 DAS/DAT fb one hand weeding at 35 DAS/DAT, Weed free (Two hand weeding) and Weedy check in sub plot. Result revealed that significantly higher crop growth rate, relative growth rate, absolute growth rate, net assimilation rate and grain yield was recorded in system of rice intensification (SRI) during both the years of investigation. Among the weed management practices, higher value recorded with spray of Bispyribac sodium (10%) 25 g a.i. ha-1 at 15 days after sowing/days after transplanting fb one hand weeding at 35 DAS/DAT