JPEG 2000 — Wavelet Image Compression
Open BetaJPEG 2000 (.jp2) is the ISO/IEC 15444 international standard that uses a wavelet transform instead of the block DCT of ordinary JPEG. On osm2cdr.ru the map is rendered to PNG and then converted to .jp2 through GDAL's JP2OpenJPEG driver. Wavelet compression gives graceful degradation without blocky artefacts and multi-resolution decode. Both lossy and lossless modes are supported. The output is a raster RGB image of the map (not a multi-band satellite scene); it is a compact replacement for heavy PNG in high-resolution map posters and raster overlays.
OpenStreetMap data as of 24 August 2026 · 41 days ago
ಪ್ರಮುಖ ವೈಶಿಷ್ಟ್ಯಗಳು
JPEG 2000 ಫಾರ್ಮ್ಯಾಟ್ ಬಗ್ಗೆ
JPEG 2000 is the ISO/IEC 15444 standard, built on a wavelet transform instead of the block DCT of ordinary JPEG. Hence its character: under heavy compression the picture blurs smoothly, without square artifacts, and a lower resolution can be read out of a single file without unpacking the whole image.
In cartography the format took root in archives and raster libraries: aerial photography, map scans and large rasters are stored as .jp2 for years. Multi-level decoding makes viewing large images fast — the program reads exactly the level it needs for the screen.
With us the map is rendered to PNG and then converted to .jp2 by the GDAL JP2OpenJPEG driver. The output is an ordinary RGB image of the map: a compact replacement for a heavy PNG in high-resolution posters and raster overlays. Lossy compression is applied by default, and a reversible lossless mode is available too.
What is not in the file: the spectral bands of a satellite scene and vector features. This is a snapshot of the map, not a multi-band raster and not a set of layers — OpenStreetMap tags do not make it in.
JPEG 2000 ಫೈಲ್‌ಗಳನ್ನು ಯಾವ ಪ್ರೋಗ್ರಾಮ್ ತೆರೆಯುತ್ತದೆ
OSM2CDR ನಿಂದ ಎಕ್ಸ್‌ಪೋರ್ಟ್ ಮಾಡಲಾದ JPEG 2000 — Wavelet Image Compression (.jp2) ಫೈಲ್‌ಗಳನ್ನು ಈ ಕೆಳಗಿನ ಪ್ರೋಗ್ರಾಮ್‌ಗಳು ಮತ್ತು ಅಪ್ಲಿಕೇಶನ್‌ಗಳು ತೆರೆಯಬಹುದು, ಸಂಪಾದಿಸಬಹುದು ಮತ್ತು ಬಳಸಬಹುದು:
Format specifications
- Open standard
- 2D only
- Lossy compression
- No attributes
- Output: 1 file
- A single .jp2 (ISO/IEC 15444) converted from PNG via the GDAL JP2OpenJPEG driver; wavelet compression, lossy by default with multi-resolution decode, an RGB map snapshot.
JPEG 2000 ನಕ್ಷೆಗಳನ್ನು ಯಾರು ಬಳಸುತ್ತಾರೆ
JPEG 2000 ಅನ್ನು ಹೇಗೆ ಎಕ್ಸ್‌ಪೋರ್ಟ್ ಮಾಡುವುದು
ರಫ್ತಿನ ನಂತರ ಹೇಗೆ ತೆರೆಯುವುದು
- QGIS (free) — Layer → Add Raster Layer; the JP2OpenJPEG driver ships with GDAL and is already installed.
- GDAL — gdalinfo map.jp2 shows the dimensions and resolution levels, and gdal_translate converts the file into GeoTIFF or PNG.
- ImageMagick or IrfanView with a plugin — viewing and batch conversion on the desktop.
- Print and layout — Photoshop and InDesign open .jp2; if the print shop asks for a familiar format, hand them a TIFF made from the same file.
JPEG 2000 ನಲ್ಲಿ ಜನಪ್ರಿಯ ನಕ್ಷೆಗಳು
JPEG 2000 — Wavelet Image Compression ನಕ್ಷೆ ಎಕ್ಸ್‌ಪೋರ್ಟ್‌ಗಳನ್ನು ಪಡೆಯಿರಿ
OpenStreetMap ನಿಂದ ವೃತ್ತಿಪರ JPEG 2000 ನಕ್ಷೆಗಳನ್ನು ಡೌನ್‌ಲೋಡ್ ಮಾಡಿ. ತಕ್ಷಣದ ರಚನೆ, ಯಾವುದೇ ಪ್ರದೇಶ.
ಪದೇ ಪದೇ ಕೇಳಲಾಗುವ ಪ್ರಶ್ನೆಗಳು
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Наконец-то карты можно скачать в векторе. Автору спасибо!
всё очень круто, не ожидал что просто приду и скачаю кусочек карты! спасибо!!!
ОГРОМНОЕ СПАСИБО!!! ОЧЕНЬ ХОРОШАЯ ПРОГРАММА!!! Искал карту в векторе на стыке 3 стран - очень помогло!!
Ты - молодец! Сделал большое и нужное дело!
Иван, спасибо огромное! Не просто человек - Человечище!
иван, вы просто чудо. Спасибо за неимоверно крутой сервис
Относительно быстро и качественно собирает карты, самое приятно что бесплатно. удобно выбирать области